from:"Ed Kelly"

[PD] Pd sound installation in South-East England

2022-03-06 Thread Ed Kelly via Pd-list

Hey all,
If anyone is anywhere near Margate (England, north-eastern tip of the south 
east peninsula) I will be exhibiting a quadrophonic interactive sound 
installation in the Margate School from the 18th to the 22nd of March.
This is an artist-in residence program, and there are three artists exhibiting 
on those dates - my sensor-driven Pd sound-artwork, a 3D CGI designer and 
another who works with light sculpture.
The Margate School is an art college housed in a very large (deserted by 
Woolworths) department store in Margate, England, which is also a great seaside 
resort. I am capturing sound clips from the building and creating a set of Pd 
patches that will intreract with the audience through infra-red sensors.
Please come if you are in the area.
Best wishes,Ed Kelly
News | The Margate School

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[PD] [PD-announce] Old vs new

2021-07-03 Thread Ed Kelly via Pd-announce

https://www.youtube.com/watch?v=kD12ARMhcnQ=6s_channel=PaulSimonLimbrick

This is what can happen when you take modern PC and install a 2009 operating 
system (Pure-Dyne Linux, Pd-extended 0.42) and network it with a Mac 150 miles 
away(PS we actually had 5 computers for this, but it works!).
Ed

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[PD] Lockdown performances

2021-01-13 Thread Ed Kelly via Pd-list

Hey all,
Since lockdown in the UK, I have been collaborating with a longtime 
percussionist colleague of mine using various tools, but eventually with the 
great Quacktrip~ from Miller. I've collated a few of these on a website. There 
will be more, and I have applied for a grant to keep this going. In the 
meanwhile, please enjoy what we have created so far.
http://sharktracks.co.uk/html/music.html

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Re: [PD] quacktrip - jacktrip (low-latency audio) from behind home routers

2020-10-19 Thread Ed Kelly via Pd-list

Hey list,
I've been using quacktrip in live online performances with Simon Limbrick 
(percussion) - it's much easier to use than jacktrip and very effective, 
although I can confirm there are occasional dropouts - considering we are in 
completely different parts of the UK this is pretty unremarkable. It's 
advisable to increase blocksize and FIFO length, perhaps even checking the 2x 
button.
You can hear some of our work 
here:https://www.youtube.com/watch?v=9GDMUag4Q_E_channel=PaulSimonLimbrick

Cheers,Ed

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On Sunday, 18 October 2020, 15:07:40 BST, Edwin van der Heide 
 wrote:  

 Hi Miller,

I’ve started playing around with quacktrip 0.91 today and am having a lot of 
fun!

I have been interconnecting a Macbook Pro 2009 and a Macbook Pro 2016, both on 
the same local network, but one using a VPN connection from the Netherlands to 
Latvia (and back) to simulate a bit of distance.

Two observations:
- Sometimes a glitch occurs without the dropout counter increasing. I’m not 
sure if this occurs because a package is missing and the counter is not 
updated, or that the package is there and something else goes wrong. 
- The number boxes are updated at a fast rate and that takes a bit of CPU. The 
audio networking itself is actually not very cpu intensive.

I could imagine two additions:
- option to choose between 16 and 24 bit quality
- create the possibility to send audio in one direction only instead of always 
in both directions.

Cheers!

Edwin

p.s. should I assume that foo.ucsd.edu is usually up or would you recommend to 
run my own server?

> On 2 Jun 2020, at 18:46, Miller Puckette via Pd-list  
> wrote:
> 
> To Pd list -
> 
> This is very preliminary, but some of you might be interested in this.  I've
> been working for the last month or two on making an easy-ti-use implementation
> of jacktrip to allow people stuck at home to play music together.  A test
> version of this is available on msp.ucsd.edu/tools/quacktrip .
> 
> The jacktrip implementation is based on the one in TPM by Roman Haefeli and
> Johannes Schuett (sorry for the no-diacritical spelling).
> 
> It's been tried out by 4 or 5 people so far, seems to work with some
> hiccups.  I'll be getting back to work on it after Pd 0.51-0 gets finalized.
> 
> cheers
> Miller
> 
> 
> 
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[PD] polyblep

2020-05-30 Thread Ed Kelly via Pd-list

I've been working with heavylib recently, and also creb, with anit-aliased 
oscillators.
Can anyone help me work out how I would compute a blep function for a 
saw/triangle wave where there is adjustable symmetry (like my wavefolding work 
from 2016) i.e. any angle in the waveform? I need a generalised blep function 
for any angle of piecewise breakpoint function.
Ed
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Re: [PD] msgfile massive memory usage

2019-10-26 Thread Ed Kelly via Pd-list

PS I was using 'top' in Linux to report the memory usage

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On Friday, 25 October 2019, 12:59:16 GMT+1, Ed Kelly via Pd-list 
 wrote:  
 
 Hi list,
Can anyone (especially IOhannes) explain this to me - when I attempt to load a 
file of 2.8Mb in size into msgfile, Pd reports memory usage going up to 9+ Gb? 
It seems rather a lot. The files are storage of grain windows, each of which is 
4096 points in size. With 74 of them it's 9Gb.
When I use a patch to generate the windows I store them in the msgfile object, 
and with over 130 of them there is only about 370Mb of reserved memory.
Ed
PS I tried to send the offending text file before but it was too big for the 
2000K limit of Pd messages - you can view / download it at 
http://sharktracks.co.uk/puredata/newGrainWindows.win

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[PD] msgfile massive memory usage

2019-10-25 Thread Ed Kelly via Pd-list

Hi list,
Can anyone (especially IOhannes) explain this to me - when I attempt to load a 
file of 2.8Mb in size into msgfile, Pd reports memory usage going up to 9+ Gb? 
It seems rather a lot. The files are storage of grain windows, each of which is 
4096 points in size. With 74 of them it's 9Gb.
When I use a patch to generate the windows I store them in the msgfile object, 
and with over 130 of them there is only about 370Mb of reserved memory.
Ed
PS I tried to send the offending text file before but it was too big for the 
2000K limit of Pd messages - you can view / download it at 
http://sharktracks.co.uk/puredata/newGrainWindows.win

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[PD] declare -lib discrepancy

2019-09-25 Thread Ed Kelly via Pd-list

So, I have two PCs. One is a a desktop and one is a laptop.
Both have Intel i5 Sandy Bridge processors.
Both are running Debian stretch.
Both are running Pd 0.49, and libraries are installed via Deken system.
On my desktop, after creating a [declare -lib creb] object it makes no 
difference, and I have to type [creb/eadsr~] for example to get the object to 
load.
On my laptop, I can load objects after declaring the library. I can just type a 
[declare -lib creb] object and then use as many [eadsr~] objects as I like. 
Declare does not seem to work on my desktop.
Is this an issue with regards to superuser permissions or configuration files 
(not .pdrc, surely) I'm really stumped, and it means I cannot make my libraries 
of externals and abstractions to work for other people if I cannot even 
determine why they do or do not work in my own situation. I may have overlooked 
something stupid, in which case I'll happily take the whip from you, but I 
think I'm too close to work out what's wrong.

Pls Help :-(Ed

New album - Driftwood: 
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Re: [PD] Replacement for tot

2019-02-04 Thread Ed Kelly via Pd-list

Thanks guys,
iemguts/receivecanvas is everything I need, a complete drop-in replacement for 
tot in fact. Perfect! 
Ed

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On Thursday, 31 January 2019, 16:00:31 GMT, Alexandre Torres Porres 
 wrote:  
 
 

Em qui, 31 de jan de 2019 às 11:32, oliver  escreveu:


[MouseState] from CYCLONE

just [mousestate] is fine now in the newer versions, no need for capital 
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[PD] Replacement for tot

2019-01-31 Thread Ed Kelly via Pd-list

Hi all,
Does anyone have, or know of a replacement for tot. I specifically want to 
access the arrow keys, and the mouse position. I need it for my tracker 
seqauencers...Ed
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Re: [PD] "Could'nt create"...

2018-10-12 Thread Ed Kelly via Pd-list

Ah, so that's how you use it for multiple objects.Cheers,Ed

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On Thursday, 11 October 2018, 16:19:08 GMT+1, Dan Wilcox 
 wrote:  
 
 That could also be one object: [declare -lib tof -lib iemlib -lib unauthorized]


On Oct 11, 2018, at 3:27 PM, pd-list-requ...@lists.iem.at wrote:
Date: Thu, 11 Oct 2018 13:07:04 + (UTC)
From: Ed Kelly 

ERRATA![declare -lib tof][declare -lib iemlib][declare -lib unauthorized]
THEN select all, deselect these 3 etc.
Never be afraid to admit you were wrong!ED

Dan wil...@danomatikadanomatika.comrobotcowboy.com


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Re: [PD] "Could'nt create"...

2018-10-11 Thread Ed Kelly via Pd-list

ERRATA![declare -lib tof][declare -lib iemlib][declare -lib unauthorized]
THEN select all, deselect these 3 etc.
Never be afraid to admit you were wrong!ED

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On Thursday, 11 October 2018, 13:55:59 GMT+1, Ed Kelly
wrote:

knob is from tof, mknob is from moonlib. splitfilename is from iemlib. I don't
know about "Folder_list" but folderpanel exists within tof. Perhaps it was
something from unauthorized?
If you download a library using deken ("Find Externals" in the help menu), you
need to declare it before you use it.
So with your patches of old, put a
[declare -lib tof iemlib unauthorized]
in the patch. The select all, then shift-click the declare to de-select it, and
cut+paste everything else. Save the patch and it should work when you load it
again. This puts the [declare] object at the start of the.pd file, so the
library will be loaded before the patch.

Yes Pd has changed a lot recently and this information should really be given
in a helpful manner, in the spirit of openness.
x
e

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On Monday, 8 October 2018, 14:21:29 GMT+1, Christof Ressi
wrote:

sliders are for losers, use float atoms instead /irony off

Gesendet: Montag, 08. Oktober 2018 um 14:12 Uhr
Von: "Matt Davey"
An: "Lucas Cordiviola"
Cc: "PD List"
Betreff: Re: [PD] "Could'nt create"...

[knob] is just silly GUI candy for losers, just use pd sliders instead.
[splitfilename] you can probably do with [list tosymbol] in vanilla
[Folder_list] is something that vanilla pd sorely lacks though... feature
request!

On Mon, Oct 8, 2018 at 12:51 PM Lucas Cordiviola
mailto:lucard...@hotmail.com]> wrote:
Probably you are using the rather new 64-bit Pd. We are working to upload all
the external catalogue for windows64 but it will take time.
You can still use the 32bit Pd and you will find almost all old externals.
You can also try to compile for w64 and upload to Deken (this might be to much
to ask :) )
You can also modify your patches and find ways to not use [externals] that you
can't get now.
:)
Mensaje telepatico asistido por maquinas.

On 10/8/2018 7:05 AM, David Schaffer wrote:
Thank you !
What about objects that are part of deprecated libraries that are not showing
up in Deken ? Is it still possible to install them manually ? is it recommanded
?
Thank you,
D S

De : Lucas Cordiviola [mailto:lucard...@hotmail.com]
Envoyé : Monday, October 8, 2018 11:46:47 AM
À : David Schaffer; pd list
Objet : Re: [PD] "Could'nt create"...
Hi,
See
http://blazicek.net/list_of_pure_data_objects.html[http://blazicek.net/list_of_pure_data_objects.html]
or
https://puredata.info/docs/ListOfPdExternals/[https://puredata.info/docs/ListOfPdExternals/]
this last one can be edited/maintained by the community.
:)
Mensaje telepatico asistido por maquinas.

On 10/8/2018 6:18 AM, David Schaffer wrote:
Hi everybody,
I’ve been away from pd for about a year and, in the meantime, switched from mac
to pc. I just reeinstalled the latest version of vanilla for Windows and I’m
trying to reopen my old patches. There’s a few objects that won’t pop up and I
can’t identify the libraries I’m missing. I thought you guys could help me
figure that out.
The objects are : Knob, splitfilename, Folder_list.
Thank you very much for your help.
D.S
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Re: [PD] "Could'nt create"...

2018-10-11 Thread Ed Kelly via Pd-list

Yes Pd has changed a lot recently and this information should really be given
in a helpful manner, in the spirit of openness.
x
e

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On Monday, 8 October 2018, 14:21:29 GMT+1, Christof Ressi
wrote:

sliders are for losers, use float atoms instead /irony off

Gesendet: Montag, 08. Oktober 2018 um 14:12 Uhr
Von: "Matt Davey"
An: "Lucas Cordiviola"
Cc: "PD List"
Betreff: Re: [PD] "Could'nt create"...

Re: [PD] polynomial pairs in lpc filter

2018-05-11 Thread Ed Kelly via Pd-list

Ah! Now you've piqued my interest. I wonder if it would also run on a Bela
board (Beaglebone Black hat - I have one of these).

It's really good that there's some low-latency platforms in small form factors
coming out now.

Having gone through the grinder with this MSP->Pd port, when I get it working
I'll be happy to try and phizz it into Bela. I started writing Pd externals
precisely to enable speech manipulation, but I got stuck and moved on to other
things. You've re-lit this fire!

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On Friday, 11 May 2018, 06:53:31 GMT+1, Simon Iten <itensi...@gmail.com>
wrote:

hi, well it is not a dissertation at all.i am working on some axoloti (a stm32
with dedicated midi and audioports, lowlatency audio board) modules for lpc
playback. check out the axoloti, it’s nice!it is pretty hardware specific but
sure i can share a github link, once it is up there. it progresses slowly right
now, since i have a life as well (music…)

On 11 May 2018, at 03:46, Ed Kelly via Pd-list <pd-list@lists.iem.at> wrote:
Oh gosh! Well spotted!

It loads, but I suspect I will have to interrogate the algorithms to make sure
they are the correct interpretation of the vDSP algorithms in the original Max
objects. This was the main part, and I've been a bit rusty at this - it's got
me almost up-to-scratch again. A few more modules to port and it might just
work!

Thanks Christof, and all of you...but

Simon Iten - when you've finished your dissertation could you share your
results?

Still on it...
Ed

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On Friday, 11 May 2018, 01:21:29 GMT+1, Christof Ressi
<christof.re...@gmx.at> wrote:

you forgot to return your object (x) in mbc_lpc_tilde_new :-)
Christof

Gesendet: Freitag, 11. Mai 2018 um 02:06 Uhr
Von: "Ed Kelly via Pd-list" <pd-list@lists.iem.at>
An: padovani <zepadovani.li...@gmail.com>
Cc: "Pd list" <pd-list@lists.iem.at>
Betreff: Re: [PD] polynomial pairs in lpc filter

Jose...
I've stuck my head in the lion's mouth so I may as well go in for one more
bite, although I promise you that IOhannes Zmoelnig is a REALLY NICE GUY.

I agree that edkellytista9 is a pretty stupid github name. It was done in a
hurry for working on another project, but I'm setting up a more serious one
because...you know...presentation is important.
I'm using Makefile.pdlibbuilder now - very cool. And deken ekext-0.2 coming
soon.
I have a house. It's a bit of a dump but has a studio. I don't live there yet.
We need to get the builders in!

...and my mbc_lpc~ port compiles but spits out an error:
mbc_lpc~: initializing
mbc_lpc~: free memory...
mbc_lpc~: allocated memory
Generating Hamming window for LPC analysis
mbc_lpc~
... didn't return a patchable object
mbc_lpc~
... couldn't create
I still don't know why. Perhaps Iohannes can help?
Ed
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On Monday, 7 May 2018, 09:54:49 GMT+1, padovani <zepadovani.li...@gmail.com>
wrote:

Got late into this discussion, but I'm really interested in this project and
would like to help (even if I don't have much experience coding new objects and
have been a little busy with my classes at the University).
Ed, any further success last weeks? well... also with the house... ;)
José H.

2018-04-23 4:45 GMT-03:00 IOhannes m zmoelnig
<zmoel...@iem.at[mailto:zmoel...@iem.at]>:On 2018-04-23 00:50, Christof Ressi
wrote:
>> - please mark all your functions as static.
>
> except for the setup function, of course. just to prevent a possible source
> of further frustration :-).
>

ouch.
thanks for pointing that out!

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Re: [PD] polynomial pairs in lpc filter

2018-05-10 Thread Ed Kelly via Pd-list

Oh gosh! Well spotted!

Thanks Christof, and all of you...but

Simon Iten - when you've finished your dissertation could you share your
results?

Still on it...
Ed

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On Friday, 11 May 2018, 01:21:29 GMT+1, Christof Ressi
<christof.re...@gmx.at> wrote:

you forgot to return your object (x) in mbc_lpc_tilde_new :-)
Christof

Jose...
I've stuck my head in the lion's mouth so I may as well go in for one more
bite, although I promise you that IOhannes Zmoelnig is a REALLY NICE GUY.

For Lone Shark releases, Pure Data software and published Research, go to
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On Monday, 7 May 2018, 09:54:49 GMT+1, padovani <zepadovani.li...@gmail.com>
wrote:

ouch.
thanks for pointing that out!

Re: [PD] polynomial pairs in lpc filter

2018-05-10 Thread Ed Kelly via Pd-list

tup;//FFTSetup for vDSP FFT functions
  t_DSPcomplex  split;
  //  DSPSplitComplex   l_fftSplitTemp;//temp split complex vector structure
} t_mbc_lpc_tilde;

static t_int *mbc_lpc_tilde_perform(t_int *w) 
{
  t_mbc_lpc_tilde   *x  = (t_mbc_lpc_tilde *)  (w[1]);
  t_float *in = (t_float *)(w[2]);
  t_float *out_error  = (t_float *)(w[3]);
  t_float *out_gain   = (t_float *)(w[4]);
  t_float *out_coeff  = (t_float *)(w[5]);
  t_float *out_parcor = (t_float *)(w[6]);
  t_float *out_index  = (t_float *)(w[7]);
  int n   = (int)  (w[8]);
  int p = x->l_order;
  int length = x->l_frame_size;
  int log2nfft = NLOG2(length+p+1);
  int nfft = POW2(log2nfft);
  int nfftO2 = nfft/2;
  t_float recipn = 1.0/nfft;
  int inframeidx = x->l_inframe_idx;
  int outframeidx = x->l_outframe_idx;
  
  int i, j, i1, ji;
  int in_idx = 0, out_idx = 0;
  double val;
  t_float scale, rCorr, re, im;
  //gsl_vector_float *vectorBuffer;
  //vectorBuffer = gsl_vector_float_calloc(MAX_ORDER);	   //input frame buffer
  //x->vectorBuffer = (t_float *) getzbytes( nfftO2 * sizeof(t_float));
  
  if (x->l_preemph)
{
  while (n--) 
	{
	  val = in[in_idx];
	  in[in_idx] = val + x->l_b1 * x->l_x1;
	  x->l_x1 = val;
	  in_idx++;
	}
  n = (int)(w[8]);
  in_idx = 0;
}
  
  while (n--) 
{
  if (inframeidx < length) {
	//copy input into frame buff
	//also copy into winframe buff since GSL puts the result into one of the arg vectors

	//gsl_vector_float_set(>l_frame_buff,inframeidx,in[in_idx]);// = x->l_frame_buff[inframeidx] = in[in_idx];
	x->frameBuffer[inframeidx] = in[in_idx];
	
	out_gain[out_idx] = x->l_G;

	//out_error[out_idx] = gsl_vector_float_get(>l_outError_buff,outframeidx); //for now
	out_error[out_idx] = x->errorSigBuffer[outframeidx];
	
	if (outframeidx < x->l_order) {

	  //out_coeff[out_idx] = gsl_vector_float_get(>l_outCoeff_buff,outframeidx);
	  out_coeff[out_idx] = x->outCoeffBuffer[outframeidx];
	  
	  //out_parcor[out_idx] = gsl_vector_float_get(>l_outParcor_buff,outframeidx);
	  out_parcor[out_idx] = x->parcorBuffer[outframeidx];

	  out_index[out_idx] = outframeidx + 1;
	} else {
	  out_coeff[out_idx] = 0.0;
	  out_parcor[out_idx] = 0.0;
	  out_index[out_idx] = 0;
	}
	
	inframeidx++;
	in_idx++;
	outframeidx++;
	out_idx++;
  } else {

	//gsl_vector_float_memcpy(>l_winframe_buff,>l_frame_buff);
	//memcpy(>winFrameBuffer,>frameBuffer,x->l_maxnfft * sizeof(t_float));
	x->winFrameBuffer = copybytes(x->frameBuffer, x->l_maxnfft * sizeof(t_float));
	//perform durbin-levinson - for right now, just count to the order---
	//clear memory, is this necessary?
	for (i=0; i < p+1; i++){
	  x->lR[i] = 0.0;
	  x->l_W[i] = 0.0;
	  x->l_E[i] = 0.0;
	  x->l_K[i] = 0.0;			
	}
	for(i=0; i<=p; i++) {
	  for(j=0; j < p; j++) x->l_A[i][j] = 0.0;
	}
	//window frame buff
	//vDSP_vmul(x->l_frame_buff, 1, x->l_win, 1, x->l_winframe_buff, 1, length);
	//gsl_vector_float_mul(>l_winframe_buff,>l_win);
	for(i=0;il_maxnfft;i++)
	  {
	x->winFrameBuffer[i] = x->winFrameBuffer[i] * x->window[i];
	  }

#ifdef DEBUG
	for(i=0;i<length;i++)post("\nwinframe(%d) = %g;",i+1,x->winFrameBuffer[i]);
#endif
	
	//create r from auto correlation
	if ((2*nfft*log2(nfft)+nfft) > length*p) { //NOTE: change this to update only when order is changed!
	  //time domain method
	  //for(i=0; i < p+1; i++) vDSP_dotpr(x->l_winframe_buff,1,x->l_winframe_buff+i,1,x->l_R+i,length-i);
	  //gsl_vector_float_memcpy(vectorBuffer,>l_winframe_buff);
	  for(i=0; i < p+1; i++)
	{
	  //gsl_blas_sdot(>l_winframe_buff,>l_winframe_buff+i,);
	  //gsl_vector_float_set(>l_R,i,rCorr);
	  for(x->j=0;x->j < length - i; x->j++) x->lR[i] = x->winFrameBuffer[j] * x->winFrameBuffer[j+i];
	}
	} else {
	  //frequency domain method
	  // zero pad
	  //vDSP_vclr(x->l_winframe_buff+length,1,nfft-length);
	  for(i=length;i<nfft;i++)
	{
	  //gsl_vector_float_set(>l_winframe_buff,i,0);
	  x->winFrameBuffer[i] = 0.0;
	}
	  for(i=0;i<nfftO2;i++)
	  {
	x->split.fReal[i] = x->winFrameBuffer[i*2];
	x->split.fImag[i] = x->winFrameBuffer[i*2+1];
	  //convert to split complex vector
	  //gsl_vector_float_set(>split.real,i,gsl_vector_float_get(x->l_winframe_buff,i*2));
	  //gsl_vector_float_set(>split.imag,i,gsl_vector_float_get(x->l_winframe_buff,i*2+1));
	  }
	  //vDSP_ctoz( ( DSPComplex * ) x->l_winframe_buff, 2, >l_fftSplitTemp, 1, nfftO2);
	  //perform forward in place fft
	  //gsl_fft_complex_radix2_forward(>l_winframe_buff,1,nfft);
	  //EXTERN void mayer_fft(int n, t_sample *real, t_sample *imag);
	  //EXTERN void mayer_ifft(int n, t_sample *real, t_sample *imag);
	  mayer_fft(nfftO2,x->split.fReal,x->split.fImag);
	  //

Re: [PD] [vcf~] with resonance?

2018-04-24 Thread Ed Kelly via Pd-list

The 4-pole model in the ENS-85 paper does not have inversion at the input, but 
the Thomas Henry 2-pole design does. So I guess the 4-pole is more similar to 
vcf~

go figure.
Signing off
Ed


_-_-_-_-_-_-_-^-_-_-_-_-_-_-_

For Lone Shark releases, Pure Data software and published Research, go to 
http://sharktracks.co.uk  

On Tuesday, 24 April 2018, 14:40:20 GMT+1, Ed Kelly via Pd-list 
<pd-list@lists.iem.at> wrote:  
 
 Ach! NO! inversion does not happen at the input!
I guess you can look at the topologies and discover for yourself.

I'm having a bad week.
x
Ed
 

_-_-_-_-_-_-_-^-_-_-_-_-_-_-_

For Lone Shark releases, Pure Data software and published Research, go to 
http://sharktracks.co.uk  

On Tuesday, 24 April 2018, 14:33:13 GMT+1, Ed Kelly 
<morph_2...@yahoo.co.uk> wrote:  
 
 Correct me if I'm wrong (and I'm sure someone will) but going back to analog 
electronics...
If you examine the topology of a standard analog filter design, such as the 
Thomas Henry VCF1 
(http://www.birthofasynth.com/Thomas_Henry/pdf/VCF-1/Sheet_0002.pdf) you will 
see that the signal path from input to output goes through 5 inversion stages 
before being fed back into the input to generate resonance. Therefore it is 
inverted.

Since most (resonant) filters consist of an even number of stages (and 
therefore an even number of poles and/or zeroes) you should probably invert the 
feedback. With an odd number you should probably not invert feedback. My guess 
is that vcf~ implements an even-number (probably 4-pole) resonant filter, a la 
Moog. You can also try mvcf~ from my library (ekext - 
http://sharktracks.co.uk/puredata/ekext-0.1.8.tar.gz) which is another attempt 
at emulating this topology, or there are lots of others I'm sure you know about.

This might seem counter-intuitive, but the image below shows how this works 
with regards to vcf~ - the output of vcf~ is NOT inverted, whereas the output 
of an analog VCF should be.

Odd-number staged filters are very rare in the analog world, and most (i.e. 
18dB per octave) were created to implement the (mythical 3-pole topology) 
filter of the Roland TB303. However, according to the schematics of the TB303 
it is a four-pole diode-ladder VCF using transistors as diodes, with extra 
resonance artifacts revealed by Tim Stinchcombe on his excellent website. Tim 
Stinchcombe - TB-303 Diode Ladder Filter model

| 
| 
|  | 
Tim Stinchcombe - TB-303 Diode Ladder Filter model


 |

 |

 |




Meanwhile, if you want to go deeper with regards to 4-pole filter topologies 
(and lowpass/highpass configurations) it is worth checking out a paper 
published in 1985 - http://electronotes.netfirms.com/EN85VCF.PDF
The easiest way to think about it, from this paper, is that you think about 
each stage as an inversion, and the input itself is one of the stages, so for a 
4-pole filter there are 4+1 inversion stages. But in the digital world I guess 
you'll have to test input and output at a relatively low frequency to the 
cutoff to determine inversion principles for the enhancement of resonance.

I hope this helps. It gave me a break from mixing!
Ed
_-_-_-_-_-_-_-^-_-_-_-_-_-_-_
For Lone Shark releases, Pure Data software and published Research, go to 
http://sharktracks.co.uk  

On Tuesday, 24 April 2018, 06:44:19 GMT+1, William Huston 
<williamahus...@gmail.com> wrote:  
 
 What's the best or "correct" way to add resonance to a [vcf~]? 
   
   - Should the feedback be delayed?
   - Should the feedback be inverted? 
   - Should the feedback be from the outlet I'm using?
   
   - Or should the feedback always come from the BP or HiPass side?
Thanks!BH

--
William Huston:  williamahus...@gmail.com
Binghamton NY

Public Service Mapping / Videography / Research
Blog -- Facebook -- Twitter  -- Youtube
Document collections: VirtualPipelines -- BHDCSDimockArchive
Please support my work: TinyURL.com/DonateToBillHuston


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Re: [PD] [vcf~] with resonance?

2018-04-24 Thread Ed Kelly via Pd-list

Ach! NO! inversion does not happen at the input!
I guess you can look at the topologies and discover for yourself.

I'm having a bad week.
x
Ed
 

_-_-_-_-_-_-_-^-_-_-_-_-_-_-_

For Lone Shark releases, Pure Data software and published Research, go to 
http://sharktracks.co.uk  

On Tuesday, 24 April 2018, 14:33:13 GMT+1, Ed Kelly 
<morph_2...@yahoo.co.uk> wrote:  
 
 Correct me if I'm wrong (and I'm sure someone will) but going back to analog 
electronics...
If you examine the topology of a standard analog filter design, such as the 
Thomas Henry VCF1 
(http://www.birthofasynth.com/Thomas_Henry/pdf/VCF-1/Sheet_0002.pdf) you will 
see that the signal path from input to output goes through 5 inversion stages 
before being fed back into the input to generate resonance. Therefore it is 
inverted.

Since most (resonant) filters consist of an even number of stages (and 
therefore an even number of poles and/or zeroes) you should probably invert the 
feedback. With an odd number you should probably not invert feedback. My guess 
is that vcf~ implements an even-number (probably 4-pole) resonant filter, a la 
Moog. You can also try mvcf~ from my library (ekext - 
http://sharktracks.co.uk/puredata/ekext-0.1.8.tar.gz) which is another attempt 
at emulating this topology, or there are lots of others I'm sure you know about.

This might seem counter-intuitive, but the image below shows how this works 
with regards to vcf~ - the output of vcf~ is NOT inverted, whereas the output 
of an analog VCF should be.

Odd-number staged filters are very rare in the analog world, and most (i.e. 
18dB per octave) were created to implement the (mythical 3-pole topology) 
filter of the Roland TB303. However, according to the schematics of the TB303 
it is a four-pole diode-ladder VCF using transistors as diodes, with extra 
resonance artifacts revealed by Tim Stinchcombe on his excellent website. Tim 
Stinchcombe - TB-303 Diode Ladder Filter model

| 
| 
|  | 
Tim Stinchcombe - TB-303 Diode Ladder Filter model


 |

 |

 |




Meanwhile, if you want to go deeper with regards to 4-pole filter topologies 
(and lowpass/highpass configurations) it is worth checking out a paper 
published in 1985 - http://electronotes.netfirms.com/EN85VCF.PDF
The easiest way to think about it, from this paper, is that you think about 
each stage as an inversion, and the input itself is one of the stages, so for a 
4-pole filter there are 4+1 inversion stages. But in the digital world I guess 
you'll have to test input and output at a relatively low frequency to the 
cutoff to determine inversion principles for the enhancement of resonance.

I hope this helps. It gave me a break from mixing!
Ed
_-_-_-_-_-_-_-^-_-_-_-_-_-_-_
For Lone Shark releases, Pure Data software and published Research, go to 
http://sharktracks.co.uk  

On Tuesday, 24 April 2018, 06:44:19 GMT+1, William Huston 
<williamahus...@gmail.com> wrote:  
 
 What's the best or "correct" way to add resonance to a [vcf~]? 
   
   - Should the feedback be delayed?
   - Should the feedback be inverted? 
   - Should the feedback be from the outlet I'm using?
   
   - Or should the feedback always come from the BP or HiPass side?
Thanks!BH

--
William Huston:  williamahus...@gmail.com
Binghamton NY

Public Service Mapping / Videography / Research
Blog -- Facebook -- Twitter  -- Youtube
Document collections: VirtualPipelines -- BHDCSDimockArchive
Please support my work: TinyURL.com/DonateToBillHuston


___
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Re: [PD] [vcf~] with resonance?

2018-04-24 Thread Ed Kelly via Pd-list

Correct me if I'm wrong (and I'm sure someone will) but going back to analog 
electronics...
If you examine the topology of a standard analog filter design, such as the 
Thomas Henry VCF1 
(http://www.birthofasynth.com/Thomas_Henry/pdf/VCF-1/Sheet_0002.pdf) you will 
see that the signal path from input to output goes through 5 inversion stages 
before being fed back into the input to generate resonance. Therefore it is 
inverted.

Since most (resonant) filters consist of an even number of stages (and 
therefore an even number of poles and/or zeroes) you should probably invert the 
feedback. With an odd number you should probably not invert feedback. My guess 
is that vcf~ implements an even-number (probably 4-pole) resonant filter, a la 
Moog. You can also try mvcf~ from my library (ekext - 
http://sharktracks.co.uk/puredata/ekext-0.1.8.tar.gz) which is another attempt 
at emulating this topology, or there are lots of others I'm sure you know about.

This might seem counter-intuitive, but the image below shows how this works 
with regards to vcf~ - the output of vcf~ is NOT inverted, whereas the output 
of an analog VCF should be.

Odd-number staged filters are very rare in the analog world, and most (i.e. 
18dB per octave) were created to implement the (mythical 3-pole topology) 
filter of the Roland TB303. However, according to the schematics of the TB303 
it is a four-pole diode-ladder VCF using transistors as diodes, with extra 
resonance artifacts revealed by Tim Stinchcombe on his excellent website. Tim 
Stinchcombe - TB-303 Diode Ladder Filter model

| 
| 
|  | 
Tim Stinchcombe - TB-303 Diode Ladder Filter model


 |

 |

 |




Meanwhile, if you want to go deeper with regards to 4-pole filter topologies 
(and lowpass/highpass configurations) it is worth checking out a paper 
published in 1985 - http://electronotes.netfirms.com/EN85VCF.PDF
The easiest way to think about it, from this paper, is that you think about 
each stage as an inversion, and the input itself is one of the stages, so for a 
4-pole filter there are 4+1 inversion stages. But in the digital world I guess 
you'll have to test input and output at a relatively low frequency to the 
cutoff to determine inversion principles for the enhancement of resonance.

I hope this helps. It gave me a break from mixing!
Ed
_-_-_-_-_-_-_-^-_-_-_-_-_-_-_
For Lone Shark releases, Pure Data software and published Research, go to 
http://sharktracks.co.uk  

On Tuesday, 24 April 2018, 06:44:19 GMT+1, William Huston 
 wrote:  
 
 What's the best or "correct" way to add resonance to a [vcf~]? 
   
   - Should the feedback be delayed?
   - Should the feedback be inverted? 
   - Should the feedback be from the outlet I'm using?
   
   - Or should the feedback always come from the BP or HiPass side?
Thanks!BH

--
William Huston:  williamahus...@gmail.com
Binghamton NY

Public Service Mapping / Videography / Research
Blog -- Facebook -- Twitter  -- Youtube
Document collections: VirtualPipelines -- BHDCSDimockArchive
Please support my work: TinyURL.com/DonateToBillHuston


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Re: [PD] polynomial pairs in lpc filter

2018-04-22 Thread Ed Kelly via Pd-list

Ouch!

_-_-_-_-_-_-_-^-_-_-_-_-_-_-_

For Lone Shark releases, Pure Data software and published Research, go to 
http://sharktracks.co.uk  

On Friday, 20 April 2018, 22:26:46 GMT+1, IOhannes m zmölnig 
<zmoel...@iem.at> wrote:  
 
 On 04/20/2018 11:06 PM, Ed Kelly via Pd-list wrote:
> Code was shared previously on a github, but here's the offending article, and 
> the link.
> 
> The botherer is called mbc_lpc~.c
> 
> edkellytista9/LPCToolkitPd

you know, "edkellytista9/LPCToolkitPd" can be about everything; why
would i have thought about a github project?

anyhow.

compiling your file prints a huge fat warning:
> mbc_lpc~.c:661:1: warning: control reaches end of non-void function
[-Wreturn-type]

which is indeed true, and it is telling you that your constructor
function lpc_new() is not returning anything (and definitely not an object).

the externals howto [1] says:
> The constructor has to return a pointer to the instantiated
> data space.

but even with that fixed, it doesn't load.
now i've asked you to:
- run Pd with "-verbose".
- check the console.

to which you replied:
> tried...(all pd search paths)...and failed
> tried...(current directory)...and failed

however, when i try to load your external i get:
> tried /tmp/zmoelnig/LPCToolkitPd/mbc_lpc~.l_ia64 and succeeded
> load_object: Symbol "mbc_lpc_tilde_setup" not found

which is writing out as plain as possible that your external misses the
only function that it *must* have in order to be any use to Pd: the
callback function that allows your external to bootstrap.
(while blindly copying, you renamed your object but forgot to rename the
setup function).


apart from that:
- please mark all your functions as static. you will get nameclashes
otherwise. making your objects use totally different functions than you
expect (and possible making the object of other people use different
functions).
- template Makefile 1.0.14? seriously? consider switching to
pdlibbuilder. it's much nicer. for starters, it doesn't make bogus
file-extensions on linux/amd64.


gfmdsar
IOhannes

[1]
https://github.com/pure-data/externals-howto#constructor-instantiation-of-an-object




> 
> 
> | 
> | 
> | 
> |  |  |
> 
>  |
> 
>  |
> | 
> |  | 
> edkellytista9/LPCToolkitPd
> 
> LPCToolkitPd - Mark Cartwright's LPC Toolkit for Pure Data
>  |
> 
>  |
> 
>  |
> 
> 
> 
> 
> 
> _-_-_-_-_-_-_-^-_-_-_-_-_-_-_
> 
> For Lone Shark releases, Pure Data software and published Research, go to 
> http://sharktracks.co.uk  
> 
>    On Friday, 20 April 2018, 22:02:16 GMT+1, IOhannes m zmölnig 
><zmoel...@iem.at> wrote:  
>  
>  On 04/20/2018 04:38 PM, Ed Kelly via Pd-list wrote:
>> Apologies - I'm trying to do this while buying a house...I don't know if 
>> that is simple in Austria but it isn't here.
> 
> good luck.
> i'm sure it is a hell of stuff to do.
> 
>> After reading your email I assumed it was something new, but of course I had 
>> just copied, pasted and altered code from a previous external (and forgot> 
>> Perhaps it's to do with linking to libm, so I'll check the makefile
> once I'm back in a reasonably stable (time-wise) environment.
> 
> in the meantime, you could also share your code with us.
> 
>> BUT - I've never really understood (in ~13 years of external development) 
>> what all those args to class_new() did before, and you've forced me to look 
>> deeper into m_pd.h
> 
> fwiw, each and every argument to class_new() is covered by the externals
> howto.
> 
>> I should thank you for that - and yes, I learned how to write externals by 
>> reading your howto, in 2005 I believe.
> 
> :-)
> 
> 
> gdsamr
> IOhannes
> ___
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> 
> 
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Re: [PD] polynomial pairs in lpc filter

2018-04-20 Thread Ed Kelly via Pd-list

Code was shared previously on a github, but here's the offending article, and 
the link.

The botherer is called mbc_lpc~.c

edkellytista9/LPCToolkitPd


| 
| 
| 
|  |  |

 |

 |
| 
|  | 
edkellytista9/LPCToolkitPd

LPCToolkitPd - Mark Cartwright's LPC Toolkit for Pure Data
 |

 |

 |





_-_-_-_-_-_-_-^-_-_-_-_-_-_-_

For Lone Shark releases, Pure Data software and published Research, go to 
http://sharktracks.co.uk  

On Friday, 20 April 2018, 22:02:16 GMT+1, IOhannes m zmölnig 
<zmoel...@iem.at> wrote:  
 
 On 04/20/2018 04:38 PM, Ed Kelly via Pd-list wrote:
> Apologies - I'm trying to do this while buying a house...I don't know if that 
> is simple in Austria but it isn't here.

good luck.
i'm sure it is a hell of stuff to do.

> After reading your email I assumed it was something new, but of course I had 
> just copied, pasted and altered code from a previous external (and forgot> 
> Perhaps it's to do with linking to libm, so I'll check the makefile
once I'm back in a reasonably stable (time-wise) environment.

in the meantime, you could also share your code with us.

> BUT - I've never really understood (in ~13 years of external development) 
> what all those args to class_new() did before, and you've forced me to look 
> deeper into m_pd.h

fwiw, each and every argument to class_new() is covered by the externals
howto.

> I should thank you for that - and yes, I learned how to write externals by 
> reading your howto, in 2005 I believe.

:-)


gdsamr
IOhannes
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  /*
 *   LPC Toolkit
 *   By Mark Cartwright
 *   Pure Data port by Edward Kelly 2018
 *   BSD licence
 *
 *
 */

#include "m_pd.h"
#include 
//#include 
//#include 

#ifdef _WIN32
# include  /* MSVC or mingw on windows */
#elif defined(__linux__) || defined(__APPLE__)
# include  /* linux, mac, mingw, cygwin */
#else
# include  /* BSDs for example */
#endif

static t_class *mbc_lpc_class;

#define MAX_ORDER 200
#define NLOG2(x) (ceil(log2(x)))
#define POW2(x) (1 << x)
#define TWOPI M_PI * 2
#define DEFAULT_FS 44100
#define DEFAULT_FRAMERATE 100
#define DEFAULT_V_SIZE 64
#define DEFAULT_ORDER 32

typedef struct _DSPcomplex
{
  //gsl_vector_float* real;
  //gsl_vector_float* imag;
  t_float* fReal;
  t_float* fImag;

} t_DSPcomplex;

//#define REAL(z,i) gsl_vector_float_set(z,2*(i))
//#define IMAG(z,i) gsl_vector_float_setz(z,2*(i)+1)

typedef struct _lpc 
{
  t_object  x_obj;	   // the object itself (t_pxobject in MSP)
  t_float dummy;
  //t_float*  l_frame_buff;	   //input frame buffer
  //gsl_vector_float*  l_frame_buff;	   //input frame buffer
  //t_float*  l_winframe_buff;   //windowed input frame buffer
  //gsl_vector_float*  l_winframe_buff;   //windowed input frame buffer
  //t_float*	l_outCoeff_buff;   //coefficient signal
  //gsl_vector_float*	l_outCoeff_buff;   //coefficient signal
  //t_float*	l_outParcor_buff; 	   //PARCOR coeffs
  //gsl_vector_float*	l_outParcor_buff; 	   //PARCOR coeffs
  //t_float*  l_outError_buff;	   //error signal
  //gsl_vector_float*  l_outError_buff;	   //error signal
  //t_float*  l_win;	   //analysis window
  //gsl_vector_float*  l_win;	   //analysis window
  //t_float*	l_R;
  //gsl_vector_float*	l_R;
  /*-- non-GSL versions --*/

  t_float*  frameBuffer;
  t_float*  winFrameBuffer;
  t_float*  outCoeffBuffer;
  t_float*  parcorBuffer;
  t_float*  errorSigBuffer;
  t_float*  window;
  t_float*  lR;
  //  t_float*  vectorBuffer;
  
  double*	l_W;
  double*	l_E;
  double*	l_K;
  double 	l_G;
  double**	l_A;
  double 	l_x1;  //last samples of pre-emphasis filter
  float 	l_b1;	   //pre-emph coefficient
  int 	l_order;	   //predictor order
  int 	l_order_max;   //max order according to fs = order * frame_rate
  int 	l_preemph; //pre-epmhasis filter on/off
  int 	l_frame_rate;  //analysis frame rate
  int 	l_frame_size;  //analysis frame size, where fs = frame_rate * frame_size * 2
  int 	l_hop_size;//hop_size = frame_size * 2 (b/c of overlap)
  int 	l_inframe_idx; //current inframe buffer index
  int 	l_outframe_idx;	   //current outframe buffer index
  long 	l_v_size;	   //vector size
  float 	l_fs;  //sampling rate
  int 	l_maxnfft; //fft length
  int 	l_log2nfft;	   //log2(fft length)
  int initOrder, initFramerate, initPreemph; // initialization values
  int j;

  //  FFTSetup  l_fftsetup;/

Re: [PD] polynomial pairs in lpc filter

2018-04-20 Thread Ed Kelly via Pd-list

Apologies - I'm trying to do this while buying a house...I don't know if that 
is simple in Austria but it isn't here.

But, I was indeed firing blind myself. I assume you are referring to line 665 
to 668 in mbc_lpc~.c:
  mbc_lpc_class = class_new(gensym("mbc_lpc~"), 
  (t_newmethod)lpc_new, 
  0, sizeof(t_lpc),
  CLASS_DEFAULT, A_DEFFLOAT, 0);

After reading your email I assumed it was something new, but of course I had 
just copied, pasted and altered code from a previous external (and forgot)
Perhaps it's to do with linking to libm, so I'll check the makefile once I'm 
back in a reasonably stable (time-wise) environment.

BUT - I've never really understood (in ~13 years of external development) what 
all those args to class_new() did before, and you've forced me to look deeper 
into m_pd.h
I should thank you for that - and yes, I learned how to write externals by 
reading your howto, in 2005 I believe.

Thanks,
Ed

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On Friday, 20 April 2018, 10:50:27 GMT+1, IOhannes m zmoelnig 
<zmoel...@iem.at> wrote:  

 On 2018-04-20 11:31, Ed Kelly via Pd-list wrote:
>> it seems that you are making it deliberately hard to help... :-)
> 
> I am taking a stab at doind things I've never done before, and I'm quite out 
> of my depth! :~}
> 
>> also, if the *only* external function you are using from m_pd.h is
> [i]fft_mayer(), then it is pretty clear that the external cannot load:
> you need at least class_new() and pd_new() as well...
> 
> Ok. I've never used class_new() and pd_new() before. Can you point me in the 
> direction of an external that uses it?

hmm... each and every one?

just to make sure: with "external" you mean some dynamically loadable
file that somehow adds new [object]s to Pd?

if we can agree on that, you might want to read my externals howto [1].
(for completeness sake, there are other ways to write externals; but so
far the only thing i've understood so far is that "it doesn't work",
making it impossible to tell which path you took before you lost your way).

fgmasdr
IOhannes

[1] https://github.com/pure-data/externals-howto
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Re: [PD] polynomial pairs in lpc filter

2018-04-20 Thread Ed Kelly via Pd-list

> it seems that you are making it deliberately hard to help... :-)

I am taking a stab at doind things I've never done before, and I'm quite out of 
my depth! :~}

> also, if the *only* external function you are using from m_pd.h is
[i]fft_mayer(), then it is pretty clear that the external cannot load:
you need at least class_new() and pd_new() as well...

Ok. I've never used class_new() and pd_new() before. Can you point me in the 
direction of an external that uses it?
Ed

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On Friday, 20 April 2018, 07:38:32 GMT+1, IOhannes m zmoelnig 
<zmoel...@iem.at> wrote:  

 On 2018-04-19 23:11, Ed Kelly via Pd-list wrote:
> verbose...
> 
> tried...(all pd search paths)...and failed
> tried...(current directory)...and failed

it seems that you are making it deliberately hard to help... :-)

does Pd find your external?
if so, does it print an error message? (raise verbosity in the
Pd-console to "DEBUG" as well).

> I will probably work it out sooner or later. The only external functions I'm 
> using are fabs() from  and fft_mayer/ifft_mayer from m_pd.h

for fabs() you must link against libm.

also, if the *only* external function you are using from m_pd.h is
[i]fft_mayer(), then it is pretty clear that the external cannot load:
you need at least class_new() and pd_new() as well...

fgamsdr
IOhannes
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Re: [PD] polynomial pairs in lpc filter

2018-04-19 Thread Ed Kelly via Pd-list

verbose...

tried...(all pd search paths)...and failed
tried...(current directory)...and failed

I will probably work it out sooner or later. The only external functions I'm 
using are fabs() from  and fft_mayer/ifft_mayer from m_pd.h

Ed


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On Thursday, 19 April 2018, 14:14:52 GMT+1, IOhannes m zmölnig 
<zmoel...@iem.at> wrote:  
 
 On 04/19/2018 11:48 AM, Ed Kelly via Pd-list wrote:
> I remember trying to get some help with why my ported lpc object wasn't 
> initalizing properly earlier this week- also silence.
that's probably because it was totally unclear (at least to me) what you
were asking.

if your object cannot load
- replace "print" with "post"
- run Pd with "-verbose".
- check the console. check the terminal.
- check the file type.
- check whether all the runtime dependencies can be found.
etc.

gamdsr
IOhannes
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Re: [PD] polynomial pairs in lpc filter

2018-04-19 Thread Ed Kelly via Pd-list

Hi Simon,

I remember trying to extract such information from pd-list members about 13 
years ago...the silence was deafening!

I remember trying to get some help with why my ported lpc object wasn't 
initalizing properly earlier this week- also silence.

However, I soldier on regardless. If you have any ideas about why my mbc_lpc~ 
object doesn't load then please hack it and return(github details at the 
bottom) but also take a look at the original code for mbc.allpass~ - it 
contains various methods that are commented out for calculating filter 
coefficients, and there may be some clues in there for you to pick at.

I've never quite got to the bottom of calculating Line Spectrum Frequencies and 
manipulating these as formants, but it sounds like the project I was trying to 
pursue so many years ago (before my idiot managers pulled the funding and tried 
tobotch their own project together).

Anyway - here's how far I've got with the port - do you think you could share 
ideas and code with me? it may speed things up at my end...

Ed

edkellytista9/LPCToolkitPd

| 
| 
| 
|  |  |

 |

 |
| 
|  | 
edkellytista9/LPCToolkitPd

LPCToolkitPd - Mark Cartwright's LPC Toolkit for Pure Data
 |

 |

 |

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On Wednesday, 18 April 2018, 14:31:43 GMT+1, Simon Iten 
 wrote:  

 calculate the zeroes (roots) of the polynomial i guess.

still hints are very welcome :)

> On 18 Apr 2018, at 11:51, Simon Iten  wrote:
> 
> hi list,
> 
> this is more of a general DSP question...
> 
> i am working on an LPC playback and mangling system for axoloti. i have most 
> of it working and i am now trying to shift formants in the filter to change 
> voice character. i found functions to convert reflection coefficients into 
> polynomial pairs and presumably i should be able to shift filter frequencies 
> in this representation of the data. unfortunately i have no clue how to do 
> that. any hints, papers, code snippets etc. are very welcome.
> 
> or if someone wants to take the time to explain, you are of course more then 
> welcome
> 
> thanks for any suggestions
> 
> 

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[PD] LPC - ongoing...

2018-04-16 Thread Ed Kelly via Pd-list

To those with a dev interest...I'm still picking at this LPC toolkit 
library.edkellytista9/LPCToolkitPd

| 
| 
| 
|  |  |

 |

 |
| 
|  | 
edkellytista9/LPCToolkitPd

LPCToolkitPd - Mark Cartwright's LPC Toolkit for Pure Data
 |

 |

 |



I've got mbc_lpc~ to compile, but it still won't load in Pd.Any suggestions? 
I've tried to work out what the original Apple Accelerate functions are and 
implement them in raw C - with the exception of Mayer FFT routines from m_pd.hEd


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Re: [PD] Porting Max MSP externals to Pure Data

2018-03-07 Thread Ed Kelly via Pd-list

Hi Jamie,
Yes, I should probably look at that - I can see the limitations of GSL vectors, 
platform-wise.
I think I needed to wrap my head around that before unpicking the algorithms of 
this library though, so I'll be going through a rewrite of the rewrite before 
it becomes a Pd fact!Ed


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On Wednesday, 7 March 2018, 14:22:45 GMT, Jamie Bullock 
<jamie.b.bull...@gmail.com> wrote:  
 
 
Hi Ed,
I’d highly recommend porting to Flext rather than Pure Data. Then you have one 
codebase for both Max and Pd with the added benefit of Flext’s higher level C++ 
syntax. https://github.com/g/flext/
Jamie


On 4 Mar 2018, at 14:30, Ed Kelly via Pd-list <pd-list@lists.iem.at> wrote:
Hi List,
I'm porting a library of LPC externals from Max/MSP to Pd.I wonder if someone 
could point me towards an example of another MSP external that has successfully 
been ported to Pd - preferably a DSP external that has creation arguments, with 
code for both so I can identify the differences between coding for the two 
platforms.
Cheers,Ed

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Re: [PD] Porting Max MSP externals to Pure Data

2018-03-06 Thread Ed Kelly via Pd-list

Hey Patrick,
So, I've probably screwed up some stuff here with GSL, but I've been learning a 
hell of a lot with regards to vector operations, and porting the vDSP 
accelerate stuff to GSL. Eventually I suppose it would be good to get rid of 
that, and only use standard libs, except where the FFT stuff is concerned when 
we'll use either d_fft_fftdg.c or d_fft_fftw.c from pd src.
Also, I was reading an article about dereferencing, and I think I might have 
used > where just x-> is needed for gsl_vector_float operations, and I know 
the initialization functions gsl_vector_float_calloc() are wrong sized - I need 
to work out which need to be MAX_ORDER and which to be sized and initialized at 
size = nfft or size = nfft02 (It's 10pm and I'm also trying to master an album!)

Well, it's messy right now. Don't bust a gut on working all of it out, but if 
you can speed me up by spotting a few things it'd be appreciated.
I feel like I've absorbed a couple of megabytes in my head since the weekend.

Cheers,Ed
Enclosed - the original Max code and my incomplete hash of it - but I'm trying 
to port the hardest bit I think...Things will be renamed before a release to 
acknowledge Mark Cartwright, (as in mbc.lpc~ for the original MSP extern) but I 
haven't decided on the namespace options yet.


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On Tuesday, 6 March 2018, 19:41:16 GMT, Pagano, Patrick 
<patrick.pag...@uconn.edu> wrote:  
 
 #yiv6390742159 #yiv6390742159 -- P 
{margin-top:0;margin-bottom:0;}#yiv6390742159 
Let me know how i can help ed




pp




Patrick Pagano B.S, M.F.A

Assistant Professor in Residence

Digital Media & Design


Web & Interactive Technologies

UCONN ECE Faculty Coordinator

University of Connecticut, Stamford

(352)-226-2016
From: Pd-list <pd-list-boun...@lists.iem.at> on behalf of Simon Iten 
<itensi...@gmail.com>
Sent: Tuesday, March 6, 2018 2:22:54 PM
To: Ed Kelly
Cc: pd list
Subject: Re: [PD] Porting Max MSP externals to Pure Data cool, thanks!

On 6 Mar 2018, at 17:25, Ed Kelly <morph_2...@yahoo.co.uk> wrote:
Encoding and decoding of LPC streams.I know you eagerly anticipate this! I have 
a lot of work to do...Ed


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On Sunday, 4 March 2018, 22:11:46 GMT, Simon Iten <itensi...@gmail.com> wrote:

you are my hero. what will they do exactly? lcp encoding, decoding? lcp-streams 
to audio?
cheers

On 4 Mar 2018, at 15:30, Ed Kelly via Pd-list <pd-list@lists.iem.at> wrote:
Hi List,
I'm porting a library of LPC externals from Max/MSP to Pd.I wonder if someone 
could point me towards an example of another MSP external that has successfully 
been ported to Pd - preferably a DSP external that has creation arguments, with 
code for both so I can identify the differences between coding for the two 
platforms.
Cheers,Ed

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  /**
	@file
	mbc.lpc~ - an MSP object shell
	mark cartwright - mcartwri...@gmail.com	

	@ingroup	lpcToolkit	
*/

#include "ext.h"			// standard Max include, always required (except in Jitter)
#include "ext_obex.h"		// required for new style objects
#include "z_dsp.h"			// required for MSP objects
#include 
#include 

#define MAX_ORDER 200
#define NLOG2(x) (ceil(log2(x)))
#define POW2(x) (1 << x);
#define DEFAULT_FS 44100
#define DEFAULT_FRAMERATE 100
#define DEFAULT_V_SIZE 64

// object struct
typedef struct _lpc 
{
	t_pxobject	ob;	// the object itself (t_pxobject in MSP)
	t_float*	l_frame_buff;		//input frame buffer
	t_float*	l_winframe_buff;	//windowed input frame buffer
	t_float*	l_outCoeff_buff;	//coefficient signal
	t_float*	l_outParcor_buff; 	//PARCOR coeffs
	t_float*	l_outError_buff;	//error signal
	t_float*	l_win;//analysis window
	t_float*	l_R;
	double*		l_W;
	double*		l_E;
	double*		l_K;
	double 		l_G;
	double**	l_A;
	double 		l_x1;//last samples of pre-emphasis filter
	float 		l_b1;//pre-emph coefficient
	int 		l_order;			//predictor order
	int 		l_order_max;		//max order according to fs = order * frame_rate
	int 		l_preemph;			//pre-epmhasis filter on/off
	int 		l_frame_rate;		//analysis frame rate
	int 		l_frame_size;		//analysis frame size, where fs = frame_rate * frame_size * 2
	int 		l_hop_size;			//hop_size = frame_size * 2 (b/c of overlap)
	int 		l_inframe_idx;		//current inframe buffer index
	int 		l_outframe_idx;

Re: [PD] Porting Max MSP externals to Pure Data

2018-03-06 Thread Ed Kelly via Pd-list

Encoding and decoding of LPC streams.I know you eagerly anticipate this! I have 
a lot of work to do...Ed


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On Sunday, 4 March 2018, 22:11:46 GMT, Simon Iten <itensi...@gmail.com> 
wrote:  
 
 you are my hero. what will they do exactly? lcp encoding, decoding? 
lcp-streams to audio?
cheers

On 4 Mar 2018, at 15:30, Ed Kelly via Pd-list <pd-list@lists.iem.at> wrote:
Hi List,
I'm porting a library of LPC externals from Max/MSP to Pd.I wonder if someone 
could point me towards an example of another MSP external that has successfully 
been ported to Pd - preferably a DSP external that has creation arguments, with 
code for both so I can identify the differences between coding for the two 
platforms.
Cheers,Ed

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Re: [PD] Pd's RGB color scheme for Data Structures

2018-03-04 Thread Ed Kelly via Pd-list

There is a swatch/color picker in jmmmp objects. Looks great  - 
swatch-gui-help.pd and swatch-help.pd but...I can find the zexy objects, but 
where are list-add list-rot and list-mult objects?Ed

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On Friday, 2 March 2018, 17:10:08 GMT, Ingo Stock  
wrote:  

 On 03/02/2018 05:54 PM, José de Abreu wrote:> but for 0 to 255 rgb
values, the math is simple, just divide this number
> by 9/255 and discard the fractional part, then multiply by the position
> and sum all (it gives a number from 0 to 999)

With data structures, the color range for red, green, blue is from 0 to
8 respectively, so the whole spectrum is 0-888. A digit 9 equals digit 8
so 959 equals 858. So the calculation is * 8/255.

See here for a demo patch:
https://forum.pdpatchrepo.info/topic/11085/how-to-convert-pd-s-color-numbers-for-data-structures-to-rgb

best, ingo
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Re: [PD] Porting Max MSP externals to Pure Data

2018-03-04 Thread Ed Kelly via Pd-list

Ah, a book? By Eric Lyons?That's manna from heaven!I have the gigaverb code 
now. I will investigate it thoroughly. Thanks,Ed

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On Sunday, 4 March 2018, 15:05:09 GMT, Marco Matteo Markidis 
<mm.marki...@gmail.com> wrote:  
 
 Hi,
you can take a look of gigaverb~. Moreover there is Eric Lyon's book on writing 
externals in max and pd.Best,Marco
2018-03-04 15:30 GMT+01:00 Ed Kelly via Pd-list <pd-list@lists.iem.at>:

Hi List,
I'm porting a library of LPC externals from Max/MSP to Pd.I wonder if someone 
could point me towards an example of another MSP external that has successfully 
been ported to Pd - preferably a DSP external that has creation arguments, with 
code for both so I can identify the differences between coding for the two 
platforms.
Cheers,Ed

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-- 
Ho cambiato l'indirizzo email in mm.marki...@autistici.org . Se non è un 
problema, scrivimi a questo nuovo indirizzo email.
I changed my email address in mm.marki...@autistici.org . If it is ok for you, 
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Re: [PD] [PD-announce] ofelia v1.0.4: Pd external library written with openFrameworks

2018-02-27 Thread Ed Kelly via Pd-list

Hmmm.I'm getting this extension on all the externals I compile on this 
machine.1) When I compiled ofelia as an addon in the openFrameworks file 
structure2) When I compile my own externals using a modified version of Hans' 
Makefile
I don't know where this is specified, but these are the outputs I get!

On Tuesday, 27 February 2018, 12:47:30 GMT, IOhannes m zmölnig 
<zmoel...@iem.at> wrote:  
 
 On 02/27/2018 11:56 AM, Ed Kelly via Pd-list wrote:
> http://sharktracks.co.uk/puredata/ofelia.l_ia64.tar.gz

i also noticed that the official ofelia externals use the "l_ia64"
extension for Linux/amd64.

i am *very* sure that this is the wrong extension.
"ia64" is the the short name of the "Itanium" architecture ([ia64]), an
architecture used mainly for servers. it is *incompatible* with the
x86_64 aka amd64 instruction set (which is the CPU that is built in
practically all PCs and Apple computers these days)
those processors are built by intel, which probably has caused the
confusion.

there's [PR297] which tries to fix this by using arch-specific
extensions that actually match the canonical names for CPU architectures
(or at least wide-spread variants thereof).

i'd suggest to avoid this extension and instead use the generic "pd_linux".


gmsadr
IOhannes

[ia64] https://en.wikipedia.org/wiki/IA-64
[PR297] https://github.com/pure-data/pure-data/pull/297



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testBuild.tar.gz
Description: application/gzip
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Re: [PD] [PD-announce] ofelia v1.0.4: Pd external library written with openFrameworks

2018-02-27 Thread Ed Kelly via Pd-list

Hi Zack, and list,
I've compiled ofelia on Linux: Ubuntu 16.04-3LTS Xenial 64bit. It works - it's 
beautiful!I've put my built external at 
http://sharktracks.co.uk/puredata/ofelia.l_ia64.tar.gz
One thing to note Zack, with Pd-0.48 and Deken externals, you need to declare 
the lib before any library objects in the patch, so the help files don't work 
until a declare -lib ofelia object is created. To change the help files:
1) copy the object from this Pd patch, or just create it in the help patch2) 
select all objects3) shift-click (de-select) the declare -lib ofelia object4) 
cut5) paste
6) save
your help files will now work "out of the box"
Best wishes,Ed

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On Tuesday, 27 February 2018, 10:28:42 GMT, Ed Kelly via Pd-list 
<pd-list@lists.iem.at> wrote:  
 
 Hi Zack,
Yes, I did get signal 4. Good luck with fixing it. I pulled the source from git 
but haven't had a chance to look at it / try to compile it yet.Cheers,Ed


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On Monday, 26 February 2018, 23:37:46 GMT, Jarbas Jácome 
<jand...@gmail.com> wrote:  
 
 Great news!! Many thanks!
Abraços
jjR

On Tue, Feb 20, 2018 at 5:01 PM, Zack Lee <cuinj...@gmail.com> wrote:
> Hi, I'm happy to announce my Pd external library, ofelia.
>
> ofelia is an external library written with openFrameworks and influenced by
> GEM for creating cross-platform multimedia applications.
>
> The library consists of over 400 objects covering most features of
> openFrameworks core API, designed to ease the development of multimedia
> applications such as visual arts, musical apps and interactive games.
>
> The library includes the following features:
>
> interactive output window
> various getters and event listeners
> 2d/3d shapes drawing
> image and font loading
> camera, lighting, material
> framebuffer object
> various data types (vec3f, color..)
> various utilities to speed up development (new expr, counter..)
> bandlimited oscillators and resonant filters
>
> The library is currently available to be used under macOS, Linux(64bit) and
> Windows. It will also be available on Raspberry Pi soon.
>
> You can download and install it by searching "ofelia" in 'Help -> Find
> externals' then add "ofelia" to 'Preferences -> Startup -> New' in Pd.
> There are some basic example patches you can try inside 'ofelia/examples'
> directory.
> ofelia works with vanilla Pd-0.48-1 and other versions of Pd may not work.
>
> The patch made with ofelia can be converted to a standalone application for
> macOS, Linux, Windows, iOS and Android without having to write any further
> code. (Thanks to ofxPd) You just need to install some required tools to
> compile it on your desktop.
> For more information, please visit https://github.com/cuinjune/ofxOfelia
>
> Any feedback is welcomed, hope you like it. :)
>
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Re: [PD] [PD-announce] ofelia v1.0.4: Pd external library written with openFrameworks

2018-02-27 Thread Ed Kelly via Pd-list

Hi Zack,
Yes, I did get signal 4. Good luck with fixing it. I pulled the source from git 
but haven't had a chance to look at it / try to compile it yet.Cheers,Ed


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On Monday, 26 February 2018, 23:37:46 GMT, Jarbas Jácome 
 wrote:  
 
 Great news!! Many thanks!
Abraços
jjR

On Tue, Feb 20, 2018 at 5:01 PM, Zack Lee  wrote:
> Hi, I'm happy to announce my Pd external library, ofelia.
>
> ofelia is an external library written with openFrameworks and influenced by
> GEM for creating cross-platform multimedia applications.
>
> The library consists of over 400 objects covering most features of
> openFrameworks core API, designed to ease the development of multimedia
> applications such as visual arts, musical apps and interactive games.
>
> The library includes the following features:
>
> interactive output window
> various getters and event listeners
> 2d/3d shapes drawing
> image and font loading
> camera, lighting, material
> framebuffer object
> various data types (vec3f, color..)
> various utilities to speed up development (new expr, counter..)
> bandlimited oscillators and resonant filters
>
> The library is currently available to be used under macOS, Linux(64bit) and
> Windows. It will also be available on Raspberry Pi soon.
>
> You can download and install it by searching "ofelia" in 'Help -> Find
> externals' then add "ofelia" to 'Preferences -> Startup -> New' in Pd.
> There are some basic example patches you can try inside 'ofelia/examples'
> directory.
> ofelia works with vanilla Pd-0.48-1 and other versions of Pd may not work.
>
> The patch made with ofelia can be converted to a standalone application for
> macOS, Linux, Windows, iOS and Android without having to write any further
> code. (Thanks to ofxPd) You just need to install some required tools to
> compile it on your desktop.
> For more information, please visit https://github.com/cuinjune/ofxOfelia
>
> Any feedback is welcomed, hope you like it. :)
>
> ___
> Pd-announce mailing list
> pd-annou...@lists.iem.at
> https://lists.puredata.info/listinfo/pd-announce
>
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[PD] Intro to Pure Data

2018-02-27 Thread Ed Kelly via Pd-list

Hi list,
I've had a wikispaces page on Pd for years now, but wikispaces is closing.I've 
decided to update it as a straightforward web page - it's designed to introduce 
new users to Pd. Any suggestions would be greatly appreciated...Pure Data

| 
| 
| 
|  |  |

 |

 |
| 
|  | 
Pure Data

Edward Peter Kelly

This is a brief introduction to Pure Data
 |

 |

 |


Thanks,Ed


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Re: [PD] [PD-announce] ofelia v1.0.4: Pd external library written with openFrameworks

2018-02-22 Thread Ed Kelly via Pd-list

Hi Zack,
I too am having Pd crash when ofelia is loaded.Would it help if I compiled it 
from source?I have Ubuntu 16.04 LTS, 64 bit distro.
Thanks,Ed

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On Thursday, 22 February 2018, 04:39:45 GMT, Zack Lee  
wrote:  
 
 Hi Jesse, Good to hear it works well on your systems.I hope you enjoy using 
the library. :)

Zack
2018-02-22 6:48 GMT+09:00 Jesse Mejia :

This is rad - thanks! On windows 10 I installed via dekken using the default 
path, and on two separate machines I needed to add the startup flag -lib ofelia
but now everything seems to be working well.
Thanks - this looks amazing! 
-jesse
On Feb 21, 2018, at 1:08 PM, Alan Brooker  wrote:


Hi Zack,
Works perfectly for me on Windows 10, this is great! Thanks so much for the 
effort in putting this library out, along with the recent  behind the scenes 
developments with Gem and the SVG capabilities in Purr Data,  Pd is again 
having some great options for graphics & visuals. 
Just curious, I'm not an OF expert (and forgive me if this is not documented 
somewhere) but is it possible to write scripts in OF and then import them into 
Pd in some way?
Thanks again

|  | Virus-free. www.avg.com  |


On Wed, Feb 21, 2018 at 5:16 PM, Alex  wrote:

Hey Zach,
I'm not on my linux machine right now so I'll have to get back to that later 
but in the mean time, on my work machine, I've run nm -u and attached what I 
got.
Clearly there is a lot more being built in to the osx version.
Last night I did actually try to install open frameworks on my linux machine 
but I had a conflict with a dependency that I didn't have time to resolve.
I might just look at the output of nm for linux and see if I can just install 
those that aren't linked there.

-Alex

On Tue, Feb 20, 2018 at 8:16 PM, Zack Lee  wrote:

Thanks for the info.I actually built the binary on the exact same distro: 
Ubuntu 16.04.3 LTS.
Could you please run the "install_dependencies.sh" script and see if it 
works?I'm sorry I don't really get what is causing the problem.I will also try 
reinstalling Ubuntu 16.04 LTS and see if it works and will let you know 
asap.Thank you.
Zack


2018-02-21 12:51 GMT+09:00 Alex :

I've also attached the gdb backtrace and the output from nm -u ofelia.l_ia64 > 
nm.txt

looks like it expects i have cairo, FreeImage, glew, and some other libs..

On Tue, Feb 20, 2018 at 7:44 PM, Alex  wrote:

no problem Zack,

alex@workin:~/local/src/openFr ameworks/scripts/linux$ lsb_release -a
No LSB modules are available.
Distributor ID:    Ubuntu
Description:    Ubuntu 16.04.3 LTS
Release:    16.04
Codename:    xenial

you mean the .iso for this version of ubuntu? http://releases.ubuntu.com/16. 
04/ubuntu-16.04.3-desktop-amd6 4.iso

On Tue, Feb 20, 2018 at 7:20 PM, Zack Lee  wrote:

Hi, Alex 
Thanks for the report.The similar problems have been reported by some Linux 
users.Could you please tell me which Ubuntu you're using?I would appreciate if 
you could give me a download link to the .iso image file.Thank you and I don't 
think you need to install openFrameworks as it shouldn't crash anyway.
Zack








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Re: [PD] maxlib/arraycopy

2017-04-21 Thread Ed Kelly via Pd-list

compiled objects for maxlib/arraycopy
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For Lone Shark releases, Pure Data software and published Research, go to 
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On Friday, 21 April 2017, 15:53, Ed Kelly <morph_2...@yahoo.co.uk> wrote:
 

 Correction - I mean it assumed the destination had to be bigger or the same 
size as the source!
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For Lone Shark releases, Pure Data software and published Research, go to 
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On Friday, 21 April 2017, 14:17, Ed Kelly via Pd-list 
<pd-list@lists.iem.at> wrote:
 

 I don't quite know what has happened to arraycopy from maxlib.
It seems to expect, from the code, that the destination array is smaller or the 
same size as the source array. That's ridiculous. My source array is 90 seconds 
long and the destination arrays are small - the duration between two bonk~ 
events in an audio stream. My rechunk~ patch, which I extensively rely on for 
live sampling, has been broken for a while.

I fixed it. Enclosed.
Ed
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arraycopy.l_i386
Description: Binary data


arraycopy.pd_darwin
Description: Binary data
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Re: [PD] maxlib/arraycopy

2017-04-21 Thread Ed Kelly via Pd-list

Correction - I mean it assumed the destination had to be bigger or the same 
size as the source!
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For Lone Shark releases, Pure Data software and published Research, go to 
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On Friday, 21 April 2017, 14:17, Ed Kelly via Pd-list 
<pd-list@lists.iem.at> wrote:
 

 I don't quite know what has happened to arraycopy from maxlib.
It seems to expect, from the code, that the destination array is smaller or the 
same size as the source array. That's ridiculous. My source array is 90 seconds 
long and the destination arrays are small - the duration between two bonk~ 
events in an audio stream. My rechunk~ patch, which I extensively rely on for 
live sampling, has been broken for a while.

I fixed it. Enclosed.
Ed
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   /* - arraycopy  --- */
/*  */
/* Copy data from one array to another .*/
/* Written by Olaf Matthes <olaf.matt...@gmx.de>*/
/* Get source at http://www.akustische-kunst.org/puredata/maxlib/   */
/*  */
/* This program is free software; you can redistribute it and/or*/
/* modify it under the terms of the GNU General Public License  */
/* as published by the Free Software Foundation; either version 2   */
/* of the License, or (at your option) any later version.   */
/*  */
/* This program is distributed in the hope that it will be useful,  */
/* but WITHOUT ANY WARRANTY; without even the implied warranty of   */
/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the*/
/* GNU General Public License for more details. */
/*  */
/* You should have received a copy of the GNU General Public License*/
/* along with this program; if not, write to the Free Software  */
/* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.  */
/*  */
/* Based on PureData by Miller Puckette and others. */
/*  */
/*  */

#include "m_pd.h"
#include 

static char *version = "arraycopy v0.2.1, written by Olaf Matthes <olaf.matt...@gmx.de>";

typedef struct arraycopy
{
	t_object x_obj;		
	t_symbol *x_destarray;
	t_symbol *x_sourcearray;
	t_garray *x_destbuf;
	t_garray *x_sourcebuf;
	t_intx_start;
	t_intx_end;
	t_intx_pos;
	shortx_print;
} t_arraycopy;

	/* choose the destination array to copy to */
static void arraycopy_setdestarray(t_arraycopy *x, t_symbol *s)
{
	t_garray *b;
	
	if ((b = (t_garray *)pd_findbyclass(s, garray_class)))
	{
		// post("arraycopy: destination array set to \"%s\"", s->s_name);
		x->x_destbuf = b;
	} else {
		post("arraycopy: no array \"%s\" (error %d)", s->s_name, b);
		x->x_destbuf = 0;
	}
}

static void arraycopy_setdest(t_arraycopy *x, t_symbol *s)
{
		x->x_destarray = s;
		arraycopy_setdestarray(x, x->x_destarray);
}

	/* choose the source array to copy from */
static void arraycopy_setsourcearray(t_arraycopy *x, t_symbol *s)
{
	t_garray *b;
	
	if ((b = (t_garray *)pd_findbyclass(s, garray_class)))
	{
		// post("arraycopy: source array set to \"%s\"", s->s_name);
		x->x_sourcebuf = b;
	} else {
		post("arraycopy: no array \"%s\" (error %d)", s->s_name, b);
		x->x_sourcebuf = 0;
	}
}

	/* this is the routine that actually does the copying */
	/* get's called directly when we get a 'bang' */
static void arraycopy_docopy(t_arraycopy *x)
{
  /* use new 64-bit compatible array API if available */
#if (defined PD_MAJOR_VERSION && defined PD_MINOR_VERSION) && (PD_MAJOR_VERSION > 0 || PD_MINOR_VERSION >= 41)
# define arraynumber_t t_word
# define array_getarray garray_getfloatwords
# define array_get(pointer, index) (pointer[index].w_float)
# define array_set(pointer, index, value) ((pointer[index].w_float)=value)
#else
# define arraynumber_t t_float
# define array_getarray garray_g

[PD] maxlib/arraycopy

2017-04-21 Thread Ed Kelly via Pd-list

I don't quite know what has happened to arraycopy from maxlib.
It seems to expect, from the code, that the destination array is smaller or the 
same size as the source array. That's ridiculous. My source array is 90 seconds 
long and the destination arrays are small - the duration between two bonk~ 
events in an audio stream. My rechunk~ patch, which I extensively rely on for 
live sampling, has been broken for a while.

I fixed it. Enclosed.
Ed
 _-_-_-_-_-_-_-^-_-_-_-_-_-_-_

For Lone Shark releases, Pure Data software and published Research, go to 
http://sharktracks.co.uk /* - arraycopy  --- */
/*  */
/* Copy data from one array to another .*/
/* Written by Olaf Matthes */
/* Get source at http://www.akustische-kunst.org/puredata/maxlib/   */
/*  */
/* This program is free software; you can redistribute it and/or*/
/* modify it under the terms of the GNU General Public License  */
/* as published by the Free Software Foundation; either version 2   */
/* of the License, or (at your option) any later version.   */
/*  */
/* This program is distributed in the hope that it will be useful,  */
/* but WITHOUT ANY WARRANTY; without even the implied warranty of   */
/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the*/
/* GNU General Public License for more details. */
/*  */
/* You should have received a copy of the GNU General Public License*/
/* along with this program; if not, write to the Free Software  */
/* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.  */
/*  */
/* Based on PureData by Miller Puckette and others. */
/*  */
/*  */

#include "m_pd.h"
#include 

static char *version = "arraycopy v0.2.1, written by Olaf Matthes ";

typedef struct arraycopy
{
	t_object x_obj;		
	t_symbol *x_destarray;
	t_symbol *x_sourcearray;
	t_garray *x_destbuf;
	t_garray *x_sourcebuf;
	t_intx_start;
	t_intx_end;
	t_intx_pos;
	shortx_print;
} t_arraycopy;

	/* choose the destination array to copy to */
static void arraycopy_setdestarray(t_arraycopy *x, t_symbol *s)
{
	t_garray *b;
	
	if ((b = (t_garray *)pd_findbyclass(s, garray_class)))
	{
		// post("arraycopy: destination array set to \"%s\"", s->s_name);
		x->x_destbuf = b;
	} else {
		post("arraycopy: no array \"%s\" (error %d)", s->s_name, b);
		x->x_destbuf = 0;
	}
}

static void arraycopy_setdest(t_arraycopy *x, t_symbol *s)
{
		x->x_destarray = s;
		arraycopy_setdestarray(x, x->x_destarray);
}

	/* choose the source array to copy from */
static void arraycopy_setsourcearray(t_arraycopy *x, t_symbol *s)
{
	t_garray *b;
	
	if ((b = (t_garray *)pd_findbyclass(s, garray_class)))
	{
		// post("arraycopy: source array set to \"%s\"", s->s_name);
		x->x_sourcebuf = b;
	} else {
		post("arraycopy: no array \"%s\" (error %d)", s->s_name, b);
		x->x_sourcebuf = 0;
	}
}

	/* this is the routine that actually does the copying */
	/* get's called directly when we get a 'bang' */
static void arraycopy_docopy(t_arraycopy *x)
{
  /* use new 64-bit compatible array API if available */
#if (defined PD_MAJOR_VERSION && defined PD_MINOR_VERSION) && (PD_MAJOR_VERSION > 0 || PD_MINOR_VERSION >= 41)
# define arraynumber_t t_word
# define array_getarray garray_getfloatwords
# define array_get(pointer, index) (pointer[index].w_float)
# define array_set(pointer, index, value) ((pointer[index].w_float)=value)
#else
# define arraynumber_t t_float
# define array_getarray garray_getfloatarray
# define array_get(pointer, index) (pointer[index])
# define array_set(pointer, index, value) ((pointer[index])=value)
#endif

	t_garray *b;		/* make local copy of array */
	arraynumber_t *tab;  /* the content itself */
	int sourcesize, destsize;
	t_int i;
	t_garray *A;
	arraynumber_t *vec;

	if(!x->x_destarray)
	{
		post("arraycopy: no destination array specified");
		return;
	}
	if(!x->x_sourcearray)
	{
		post("arraycopy: no source array specified");
		return;
	}

	A = x->x_destbuf;

	if ((b = (t_garray *)pd_findbyclass(x->x_sourcearray, garray_class)))
	{
		// post("arraycopy: source array set to \"%s\"", x->x_sourcearray->s_name);
	} else {

Re: [PD] soundfiler features

2017-02-22 Thread Ed Kelly via Pd-list

So (donc)
What are uniform parameters of a soundfile? Only these are necessary to enhance 
soundfiler. 

1) Channels is primary - an audio file can be any number of channels, but the 
soundfiler object needs to know in advance how many arrays to write to. This is 
non-negotiable i.e. an absolute fact.
2) Sample rate is secondary, and any file recorded at a particular sample rate 
can be played back at any other rate, but it would be nice to know this, but it 
is negotiable within the patch.

3) Bit rate - perhaps for saving this might be useful, although since saving is 
a generated process rather than a parameter specified within the header of a 
file (discuss), it is probably of little importance. The soundfiler object can 
already read 16, 24 and 32 bit files, and I can't see a future for 64 bit audio 
(although electronics manufacturers will certainly try to sell this in the 
future, despite the fact that most DA conversions are Sigma-Delta making 
bit-depth more-or-less irrelevant).
Thoughts?Ed
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For Lone Shark releases, Pure Data software and published Research, go to 
http://sharktracks.co.uk  

On Wednesday, 22 February 2017, 12:09, Lucas Cordiviola 
<lucard...@hotmail.com> wrote:

 #yiv3468639400 #yiv3468639400 -- P 
{margin-top:0;margin-bottom:0;}#yiv3468639400 
>[soundfile_info] seems the better choice andis able to read all files that are 
>read by [readsf~]/[soundfiler], fromwhat I can tell. 

In the past I found discrepancies on *sound file length*:
[soundfiler] != [sounfile_info]  [soundfiler] == soundforge

Mensaje telepatico asistido por maquinas.

From: Pd-list <pd-list-boun...@lists.iem.at> on behalf of Roman Haefeli 
<reduz...@gmail.com>
Sent: Wednesday, February 22, 2017 8:19 AM
To: pd-list@lists.iem.at
Subject: Re: [PD] soundfiler features On Die, 2017-02-21 at 11:01 +, Ed 
Kelly via Pd-list wrote:
> 
> Since this information is contained within the header of each file
> (although it's a pain with the different formats), would it not be
> sensible to have a second outlet in soundfiler that delivers the
> number of channels, before the number of samples in the file is
> delivered from the left outlet? Perhaps also other info, but what
> would be relevant to a patch? I think channels is a necessary piece
> of information. 

I, too, think that [soundfiler] should output some sound file
properties instead using them only internally. It would be good to be
able to make patches where the patch creator doesn't need to know
beforehand what exact formats are going to be opened by the patch user.

I'd like to know the following properties (in descending order of
necessity):
 * number of channels 
 * sample rate
 * bit depth

There are at least two externals, that provide this info: ext13's
[wavinfo] and [soundfile_info] from iemlib. In my experience, the
former doesn't read correctly all wav files that are read by other
programs or by Pd, I believe it assumes a certain layout instead of
truly parsing the header. [soundfile_info] seems the better choice and
is able to read all files that are read by [readsf~]/[soundfiler], from
what I can tell.

Roman

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[PD] soundfiler features

2017-02-21 Thread Ed Kelly via Pd-list

Apologies if this is a distraction.
The soundfiler object is clearly fundamental to digital music. 
I think it needs a makeover. I'm willing to help, but it's been getting 
particularly difficult and I think, unnecessarily complicated to create patches 
that automatically load a folder of sound files which may be mono or stereo (or 
even quad?).Since this information is contained within the header of each file 
(although it's a pain with the different formats), would it not be sensible to 
have a second outlet in soundfiler that delivers the number of channels, before 
the number of samples in the file is delivered from the left outlet? Perhaps 
also other info, but what would be relevant to a patch? I think channels is a 
necessary piece of information. 

I prod you for a feature, and I probably have as many of these cattle prod 
moments hitting me from behind as I work on my patches.
Cheers,Bisous,Ed

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Re: [PD] creb's ramp~ needs a help file

2017-01-28 Thread Ed Kelly via Pd-list

Yes, I think the documentation is important (shame on me for never finishing 
all my docs). It's just a bit of a shame that we have to document some quite 
redundant functions, but if they make life easier for other patchers then 
that's great. I've made quite a few things in C that could be abstractions for 
example.

Also, there's an annoyance that comes from having to investigate C code from 
abandoned libs, although this is usually not so hard with things like ramp~. I 
think it could be a good idea and a lot of work to present at least some 
examples in the help files of how such externals could be modelled within Pd 
vanilla. Naively I think this could help both newbies and people learning to 
code externals.
xEd
 _-_-_-_-_-_-_-^-_-_-_-_-_-_-_

For Lone Shark releases, Pure Data software and published Research, go to 
http://sharktracks.co.uk  

On Saturday, 28 January 2017, 20:48, Alexandre Torres Porres 
 wrote:
 

 
it's one of those objects that is in Pd but could be easily dealt with in Pd 
without the external (...) but it's basically a line~ with an offset, and a 
fixed rate 

 looks like~ cyclone's count~ but much simpler

it just generates a signal ramp with the right characteristics to patch it into 
tabread4~ and playback samples at their original pitch.

or using it with tabread~ then instead pf tabread4~
looks again like count~ as one of its applications is in conjunction with 
index~ (basically tabread~). 

There are quite a lot of externals like this (and some from me) where people 
coded something in C for convenience, but can be easily done in Pd without 
externals.

I know... Pd Extended is filled with things like that, and to make it more of a 
deal, documentation is sometimes bad, when simply non existing.
I'm willing to help this in the forth coming Purr Data, by reorganising it and 
making it better documented
cheers

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Re: [PD] creb's ramp~ needs a help file

2017-01-28 Thread Ed Kelly via Pd-list

ramp~
send it a number and it will generate a ramp~ - effectively a sample number to 
read arrays with something like a phasor~, but it just goes up and up.
I just had a look in the C code. In all honesty it's one of those objects that 
is in Pd but could be easily dealt with in Pd without the external. No 
disrespect to Tom Schouten, but it's basically a line~ with an offset, and a 
fixed rate i.e. it just generates a signal ramp with the right characteristics 
to patch it into tabread4~ and playback samples at their original pitch. The 
only exception is that it always starts from a specific value sent to the inlet.
There are quite a lot of externals like this (and some from me) where people 
coded something in C for convenience, but can be easily done in Pd without 
externals.

Here's a semi pddp formatted helpfile.It's boring.Cheers,Ed
 _-_-_-_-_-_-_-^-_-_-_-_-_-_-_

For Lone Shark releases, Pure Data software and published Research, go to 
http://sharktracks.co.uk  

On Thursday, 19 January 2017, 0:38, Alexandre Torres Porres 
 wrote:
 

 howdy, there's no help file for creb/ramp~
anybody ever used it?
thanks
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   #N canvas 212 31 559 582 10;
#X obj 9 523 cnv 15 550 20 empty \$0-pddp.cnv.footer empty 20 12 0
14 -228856 -66577 0;
#X obj 9 7 cnv 15 554 54 empty \$0-pddp.cnv.header creb/ramp~ 3 12
0 18 -204280 -1 0;
#X obj 8 263 cnv 3 550 3 empty \$0-pddp.cnv.inlets inlets 8 12 0 13
-228856 -1 0;
#X obj 8 323 cnv 3 550 3 empty \$0-pddp.cnv.outlets outlet 8 12 0 13
-228856 -1 0;
#X obj 8 383 cnv 3 550 3 empty \$0-pddp.cnv.more_info more_info 8 12
0 13 -228856 -1 0;
#X obj 77 283 cnv 17 3 30 empty \$0-pddp.cnv.let.0 0 5 9 0 16 -228856
-162280 0;
#X msg 157 135 \; pd dsp 1;
#X obj 78 343 cnv 17 3 30 empty \$0-pddp.cnv.let.0 0 5 9 0 16 -228856
-162280 0;
#X text 107 342 signal;
#N canvas 308 206 494 344 META 0;
#X text 12 140 HELP_PATCH_AUTHORS "pd meta" information added by Jonathan
Wilkes for Pd version 0.42.;
#X text 12 25 LICENSE GPL v2;
#X text 12 5 KEYWORDS signal;
#X text 12 100 OUTLET_0 signal;
#X text 12 45 DESCRIPTION start a signal ramp to read an array at any
point;
#X text 12 80 INLET_0 control;
#X text 12 120 AUTHOR Tom Schouten;
#X restore 510 524 pd META;
#X text 20 30 description: generates a signal ramp starting from the
float it's presented with.;
#X obj 68 122 ramp~;
#X obj 446 23 import creb;
#X msg 57 93 0;
#X msg 100 92 800;
#X obj 68 144 envrms~;
#X floatatom 68 166 0 0 0 0 - - -;
#X text 107 283 control;
#X text 157 283 - the ramp will start from this value;
#X text 157 342 - a ramp starting from that value;
#X text 105 390 The creb ramp~ object generates a signal to read arrays
using tabread~ or tabread4~. Other array readers are available (such
as the IEM16 library). Sending a float into the inlet re-triggers the
ramp from the value given by the float.;
#X msg 138 93 60;
#X text 105 463 In 32bit Pure Data \, there is a limit of 4 million
samples (about 90 seconds) that Pd can address in a smooth fashion.
;
#X connect 11 0 15 0;
#X connect 13 0 11 0;
#X connect 14 0 11 0;
#X connect 15 0 16 0;
#X connect 21 0 11 0;
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Re: [PD] maxlib arraycopy

2016-12-05 Thread Ed Kelly via Pd-list

Perfect. A way of doing it in Vanilla Pd. If I can gradually trim away the 
externals from my patches and vanillarize them I'll be a happy man.Thanks,Ed

 _-_-_-_-_-_-_-^-_-_-_-_-_-_-_

For Lone Shark releases, Pure Data software and published Research, go to 
http://sharktracks.co.uk  

On Thursday, 1 December 2016, 20:31, Roman Haefeli <reduz...@gmail.com> 
wrote:

 On Thu, 2016-12-01 at 18:48 +0000, Ed Kelly via Pd-list wrote:

> Does anyone have a better way of copying chunks from one array into
> another? Is there a vanilla way?

Checkout help for new [array] class. There is [array get ] for
retrieving part of or whole array as a list. With [array set ]
you can update part of or whole array.

And there has always been:

[ (
|
[send ]

to update an array/table.

Roman

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[PD] maxlib arraycopy

2016-12-01 Thread Ed Kelly via Pd-list

Hey list,
Recently my rechunk~ abstraction has ceased to work. I've recently re-installed 
and, it seems the maxlib/arraycopy object is not working the way it used to. I 
used to send it a list with[sourceArray start end destinationArray(values,but 
now, when the source array is longer than the destination array, I get error 
messages that:arraycopy: start point 1223199 out of range for destination 
chunk_2_13Where chunk_2_13 is an array created to be the same length as the 
chunk I wish to extract.
Does anyone have a better way of copying chunks from one array into another? Is 
there a vanilla way?
Questions, questions,Ed
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[PD] slidestring

2016-11-25 Thread Ed Kelly via Pd-list

Hey Anselmo,
Here's the Digital Waveguide Synthesizer (string model) I promised you at 
pdcon16~It's actually a hack of Kim Taylor's original patches posted to the 
pd-list I-can't-remember-when. Enclosed is the original folder which also has 
two different pluck excitations and one bow excitation.It's quite CPU intensive 
- more so than a Karplus-Strong model, but it's really powerful. Kim also 
included a readme.html page with some theory on how it works, and a reference 
to the original Julius Orion Smith paper from Stanford.Anyway, have a play. My 
version has a tendency to produce more inharmonic tones, but a more authentic 
string synthesis is found in Kim's DEMO1.pd and DEMO2.pd files.
Enjoy!Ed Kelly
 
--

Lone Shark releases: Light Vessel Automatic available now on 12" vinyl.Build 
Your Wings on the Way Down, the new digital album available @ 
http://scifirecords.co.uk/releases 
Earthlings compilation is out now @ http://www.pyramidtransmissions.com

Ninja Jamm - the revolutionary music remix app for iOS and Android: 
http://www.ninjajamm.com/

Gemnotes-0.2: Live music notation for Pure Data, and Metastudio 5 live 
composition and improvisation suite, available at 
http://sharktracks.co.uk/puredata

slidestring_demo.tar.gz
Description: application/gzip
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Re: [PD] I used to like better the earlierperformances by Ed Kelly in the earlier PdCons

2016-11-24 Thread Ed Kelly via Pd-list

Ho Ho Ho, festive but nasty!Queen are my least favorite rock band of all time, 
and no I don't think he uses wrap_overshoot~.But if you think that's bad, this 
is worse:Folk Alley: OpenMic - Song Information

  
|  
|   
|   
|   ||

   |

  |
|  
|   |  
Folk Alley: OpenMic - Song Information
 Folk music, traditional music, celtic music, and world music with a 24-hour 
stream and artists links and informa...  |   |

  |

  |

 
 

On Tuesday, 22 November 2016, 12:54, me.grimm  wrote:
 
 

 >> like this one with the "Killer Queen"
i dont think he's using the new [phasorwrap~] with that one... thats back in 
the metastudio daze :)
m
On Tue, Nov 22, 2016 at 1:57 AM, Alexandre Torres Porres  
wrote:

like this one with the "Killer Queen"
https://www.youtube.com/watch? v=Xi4BeAIWvIo

rad work bro
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-- 

m.e.grimm, m.f.a, ed.m.syracuse u., tc3megrimm.net

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Re: [PD] Next PdCon?

2016-11-24 Thread Ed Kelly via Pd-list

All your Alex are belong to us!
I really think two years is enough of a gap for another Pdcon - enough time for 
people to get something new together, something fresh. I think one year is too 
short a gap.
Go for it Alexandros!Ed 

On Wednesday, 23 November 2016, 18:25, Alexandre Torres Porres 
 wrote:
 
 

 Alexandre CastonguayAlexandre PorresAlexandros Drymonitis

What is wrong with people called Alex and their urge to organize PdCons?
2016-11-23 16:20 GMT-02:00 Alexandre Torres Porres :

every once in a thousand emails I hit a magic shortcut I never know of and send 
an incomplete email out...
continuing...
I never guaranteed any structure, and I can say now that it was quite a bluff 
that I could pull something off, as I had never done that... and... well... 
these days, if we were to do it here, it'd be a lot more modest...

And anyway, we had a pretty nice technical structure, but also no spatial 
system whatsoever...
what I', trying to say is that you shouldn't worry much about being fancy and 
meeting any standard requirements. Well, let me refer to some of your text.
2016-11-23 16:05 GMT-02:00 Alexandre Torres Porres :



2016-11-23 9:14 GMT-02:00 Alexandros Drymonitis :

I asked a friend and colleague who works at the American College of Greece in 
Athens whether it would be possible to host the next Pd Convention there. He is 
very positive about this, without this meaning it's certain.



sounds like a great start :) 

What I would like to ask is when do you guys think it would be best to organize 
this? 2017 or 2018?



I guess anything earlier than 5 years (2021) is a progress :D we never had two 
years in a row, but sure i'd personally love to see PdCons every year. But 
looks like 2018 is more like it...


the college can provide the necessary infrastructure 


yeah, that all sounds great 

Some other stuff (like concerts) can happen in various places in Athens (...) 
anything else will probably happen in the center.
I know that PdCon16~ was a bit scattered around NYC, and Athens is much smaller 
than that, but transportation is not the best.


Well, herd in São Paulo it was all over the place and transportation is 
definitely worse than in NY What helps a lot with these kind of things is a 
good organization, that you guys provides us all the best information on how to 
get around, also specially made maps with detailed transportation info, etc... 
just work out good logistics with enough time in schedule to get around.
I can say we did offer a good structure, but I can also say that the hardest 
part and what's more important is to offer a well organized event.
I can add more thoughts as this thread progresses ;)
cheers


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Re: [PD] [pdconv16_r] Expanding abstractions & Compiling Vanilla Patches As Objects (Gen~?)

2016-11-10 Thread Ed Kelly via Pd-list

I did something similar with wrap_overshoot~ which wraps signals only when a 
block boundary is reached...to be shown and released at pdcon16~Cheers,Ed
 Lone Shark releases: Light Vessel Automatic available now on 12" vinyl.Build 
Your Wings on the Way Down, the new digital album available @ 
http://scifirecords.co.uk/releases 
Earthlings compilation is out now @ http://www.pyramidtransmissions.com

Ninja Jamm - the revolutionary music remix app for iOS and Android: 
http://www.ninjajamm.com/

Gemnotes-0.2: Live music notation for Pure Data, and Metastudio 5 live 
composition and improvisation suite, available at 
http://sharktracks.co.uk/puredata 

On Tuesday, 1 November 2016, 15:57, Alex Norman  wrote:
 
 

 Miller did seem open to a control outlet on the inlet~ object. This was when 
we were discussing the clone object and how you have to pass messages to the 
first control inlet, if you have one, instead of just the first inlet always, 
to control the cloning operations. More generally, it would be great if 
abstractions could do anything a compiled object could do.
Alex

On November 1, 2016 8:47:11 AM PDT, Alexandre Torres Porres  
wrote:
2016-11-01 8:42 GMT-02:00 Pierre Guillot :

Hi Alexandre,
> I wonder if a thing like libpd could work as turning a vanilla patch into a
> compiled object to be used inside pd... that'd be something like gen~ in
> max/msp. 
Can you be more specific ? For the moment, I think it would be equivalent to 
usean abstraction or the object [pd~] (libpd loads dynamically a patch so I 
guess that the execution of the patch cannot be optimized and except if the 
patch has been be somehow included inside the binary, you'll have to share the 
patch with the object). For me, the main advantage of gen~ is that it generates 
code that can be used inside an application but libpd already offers this 
feature. So what would be the advantage? 


Well, I thought the code could be optimized somehow, which I believe is 
something gen~ does, and that could be an advantage... but I really know 
nothing and now it seems that is not possible.


> A - being able to retrieve control data from [inlet~]

I did it in the Cicm Wrapper but it was pretty tricky. If you use the object 
[hoa.process~], you can send messages via a signal inlet for example. I'm not 
very proud of this because I had to hack a bit the inlet class. Now, I don't 
know if I must remove this feature or keep it... Perhaps somebody could 
tell/remind us if there is a reason why signal inlets can't receive messages.

cool, there's also a [route~] object from zexy which could be embedded in inlet~


> B - being able to know if a signal is connected to [inlet~]
I also did it in the Cicm Wrapper, perhaps this feature could be included in 
the "m_pd.h" interface because for the moment you need to include "g_canvas.h" 
and "m_imp.h". Anyway, if you want a simple code that shows how to do it, I 
have an example in my dummy library. 

awesome, it's be great to have something like this in vanilla in order to 
improve the design of abstractions ;)
cheers

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Re: [PD] [PdCon16]

2016-11-05 Thread Ed Kelly via Pd-list

That looks great.I'm a bit mystified however - I seem to be presenting both the 
wavefolding poster and a Ninja Jamm presentation in the poster session! Wha?? I 
understand I've got the paper session in the morning of the 17th with NJ, and 
the wavefolding poster in the afternoon!
Of course I'll be happy to take questions about NJ in the poster session...Ed
 Lone Shark releases: Light Vessel Automatic available now on 12" vinyl.Build 
Your Wings on the Way Down, the new digital album available @ 
http://scifirecords.co.uk/releases 
Earthlings compilation is out now @ http://www.pyramidtransmissions.com

Ninja Jamm - the revolutionary music remix app for iOS and Android: 
http://www.ninjajamm.com/

Gemnotes-0.2: Live music notation for Pure Data, and Metastudio 5 live 
composition and improvisation suite, available at 
http://sharktracks.co.uk/puredata 

On Saturday, 5 November 2016, 7:45, Chris McCormick  
wrote:

 On 03/11/16 14:45, Jaime Oliver wrote:
> We have the latest draft of the PdCon program here:
> http://www.nyu-waverlylabs.org/pdcon16/program/

I am pumped, and the official video makes me feel even more pumped!

https://vimeo.com/172511539

Cheers,

Chris.

-- 
http://mccormick.cx/

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Re: [PD] could vanilla borrow iemlib's hi pass filter recipe?

2016-10-17 Thread Ed Kelly via Pd-list

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   /*
 * moog vcf, 4-pole lowpass resonant filter
 *
 * (c) Edward Kelly 2012
 * BSD License
 */

#include "m_pd.h"
#include 
#define _limit 0.95

static t_class *mvcf_tilde_class;

typedef struct _mvcf_tilde {
  t_object x_obj;
  t_float b0, b1, b2, b3, b4;  //filter buffers to keep (beware denormals!)
  t_float token, debug, safety;
  t_outlet *lp;
} t_mvcf_tilde;

/* We could have a mode where the fc and res are only registered at the start 
of the block (quick) or are registered in signal mode (slow) - i.e. a flag */

static inline float saturate( float input ) { //clamp without branching
  float x1 = fabsf( input + _limit );
  float x2 = fabsf( input - _limit );
  return 0.5 * (x1 - x2);
}


t_int *mvcf_tilde_perform(t_int *w) {
  t_mvcf_tilde   *x =   (t_mvcf_tilde *)(w[1]);
  t_sample  *in =   (t_sample *)(w[2]);
  t_sample  *fc =   (t_sample *)(w[3]);
  t_sample *res =   (t_sample *)(w[4]);
  t_sample *out =   (t_sample *)(w[5]);
  int n =  (int)(w[6]);

  float t1 = 0;
  float t2 = 0;
  float xb0 = x->b0;
  float xb1 = x->b1;
  float xb2 = x->b2;
  float xb3 = x->b3;
  float xb4 = x->b4;
  float i1 = 0;
  float fc1 = 0;
  float res1 = 0;
  float q = 0;
  float p = 0;
  float fcoeff = 0;

  //  while (n-=4) {
  while (n--) {
i1=(*in++);
fc1 = (*fc++);
/* This failsafe line stops the filter bursting
 * ...but it is expensive! */
//if(x->safety) {
//  fc1 = fc1 <= 1 ? fc1 >= 0 ? fc1 : 0 : 1;
//}
res1 = (*res++);
q = 1.0f - fc1;
p = fc1 + 0.8f * fc1 * q;
fcoeff = p + p - 1.0f;
q = res1 * (1.0f + 0.5f * q * (1.0f - q + 5.6f * q * q));
i1 -= q * xb4;  //feedback
t1 = xb1;
xb1 = (i1 + xb0) * p - xb1 * fcoeff;
t2 = xb2;
xb2 = (xb1 + t1) * p - xb2 * fcoeff;
t1 = xb3;
xb3 = (xb2 + t2) * p - xb3 * fcoeff;
xb4 = (xb3 + t1) * p - xb4 * fcoeff;
xb4 = saturate(xb4);
xb4 = xb4 - xb4 * xb4 * xb4 * 0.01f;
xb0 = i1;
*out++ = xb4*1.414; // lowpass mode
// Lowpass  output:  xb4
// Highpass output:  i1 * 0.17 + xb1 * -0.7 + xb2 * 1 + xb3 * -0.7 
+ xb4 * 0.17;
// Bandpass output:  3.0f * (b3 - xb4);

  }
  x->b0 = xb0;
  x->b1 = xb1;
  x->b2 = xb2;
  x->b3 = xb3;
  x->b4 = xb4;
//  if(x->debug != 0) {
//x->token +=1;
//if(x->token == 15) {
//  post("q = %f, p=%f, fcoeff=%f, b0=%f, b1=%f, b2=%f, b3=%f, 
b4=%f",q,p,fcoeff,xb0,xb1,xb2,xb3,xb4);
//  x->token = 0;
//}
//  }
  return (w+7);
}

void mvcf_tilde_dsp(t_mvcf_tilde *x, t_signal **sp) {
  dsp_add(mvcf_tilde_perform, 6, x, sp[0]->s_vec, sp[1]->s_vec, sp[2]->s_vec, 
sp[3]->s_vec, sp[0]->s_n);
}

void mvcf_tilde_safety(t_mvcf_tilde *x, t_floatarg f) {
  x->safety = f != 0 ? 1 : 0;
}

/*void mvcf_tilde_mode(t_mvcf_tilde *x, t_floatarg f) {
x->mode = f < 1 ? 0 : f > 1 ? 2 : 1;
}
 */

void mvcf_tilde_clear(t_mvcf_tilde *x) {
  x->b0 = 0;
  x->b1 = 0;
  x->b2 = 0;
  x->b3 = 0;
  x->b4 = 0;
}

void mvcf_tilde_debug(t_mvcf_tilde *x, t_floatarg f) {
  x->debug = f != 0 ? 1 : 0;
}

void *mvcf_tilde_new(t_floatarg f) {
  t_mvcf_tilde *x = (t_mvcf_tilde *)pd_new(mvcf_tilde_class);

  x->b0 = 0;
  x->b1 = 0;
  x->b2 = 0;
  x->b3 = 0;
  x->b4 = 0;
  x->token = 0;
  x->safety = 0;

  inlet_new (>x_obj, >x_obj.ob_pd, _signal, _signal);
  inlet_new (>x_obj, >x_obj.ob_pd, _signal, _signal);
  outlet_new(>x_obj, _signal);
  return (void *)x;
}

void mvcf_tilde_setup(void) {
  mvcf_tilde_class = class_new(gensym("mvcf~"), 
  (t_newmethod)mvcf_tilde_new, 
  0, sizeof(t_mvcf_tilde),
  CLASS_DEFAULT, A_DEFFLOAT, 0);

//  post("~~~>mvcf~");
//  post("~~~>by Ed Kelly, 2012");

  class_addmethod(mvcf_tilde_class,
  (t_method)mvcf_tilde_dsp, gensym("dsp"), 0);
  CLASS_MAINSIGNALIN(mvcf_tilde_class, t_mvcf_tilde, token);
  class_addmethod(mvcf_tilde_class, (t_method)mvcf_tilde_clear, 
gensym("clear"), 0);
  class_addmethod(mvcf_tilde_class, (t_method)mvcf_tilde_debug, 
gensym("debug"), 0);
  class_addmethod(mvcf_tilde_class, (t_method)mvcf_tilde_safety, 
gensym("safe"), 0);
  //  class_addmethod(mvcf_tilde_class, (t_method)mvcf_tilde_mode, 
gensym("mode"), A_DEFFLOAT, 0);
}
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Re: [PD] could vanilla borrow iemlib's hi pass filter recipe?

2016-10-15 Thread Ed Kelly via Pd-list

PS - I normally use cyclone/svf~ in my objects, but there is a good argument 
for a decent state-variable filter included in vanilla I think.Ed

On Sunday, 16 October 2016, 4:52, Ed Kelly <morph_2...@yahoo.co.uk> wrote:

 Hey people,
While I'm not an expert with digital filters, I did manage to piece together a 
decent-sounding ladder emulation instead of vcf~ a while ago. It only does 
resonant lowpass though. It's called mvcf~ and is found in the ekext externals 
library.
I've since been reading about analogue filter design and I reckon there may be 
high pass and band pass filters available from the source code, with the 
correct adjustment to the algorithm. I'm trying to work out how to adjust the 
coefficients to accurately model the alternative functions (i.e. highpass, and 
hence bandpass through arithmetic processes) according to the resistance 
factors outlined in this paper. Any help would be appreciated :)
So, currently, at line 78 in the code I have translations for highpass and 
bandpass (the current implementation is lowpass only with a gain factor) but I 
may be stupid in not trying this myself (or I've just been super-busy with 
other stuff!). The idea of implementing the other two modes comes from an 
Electronotes paper from Bernie Hutchins in the 1970s. This doesn't seem to be 
free online any more, but I've enclosed it.
Take a look.Cheers,Ed

Lone Shark releases: Light Vessel Automatic available now on 12" vinyl.Build 
Your Wings on the Way Down, the new digital album available @ 
http://scifirecords.co.uk/releases 
Earthlings compilation is out now @ http://www.pyramidtransmissions.com

Ninja Jamm - the revolutionary music remix app for iOS and Android: 
http://www.ninjajamm.com/

Gemnotes-0.2: Live music notation for Pure Data, and Metastudio 5 live 
composition and improvisation suite, available at 
http://sharktracks.co.uk/html/software.html 

 On Saturday, 15 October 2016, 22:10, Julian Brooks <jbee...@gmail.com> wrote:

 And my learning for the day is done.

Thanks both

On 15 October 2016 at 15:59, katja <katjavet...@gmail.com> wrote:

Thanks for your pointers Christof. The recipe you mention from
arpchord.com is different than iemlib's, but yields identical
normalization and feedback coefficients, thus the same beautiful
response. As you say, what's in the textbooks is common knowledge and
can be used by everyone. Now I'll try to get the same result in C.

By the way, [iemlib/hp~] seems to recalculate coefficients for every
dsp vector which explains the higher CPU load.

Katja

On Sat, Oct 15, 2016 at 1:59 PM, Christof Ressi <christof.re...@gmx.at> wrote:
>> If iemlib's license allows to use the recipe in BSD
>
> IMHO, the correct formular for the cutoff frequency below (which I guess is 
> also used in [hp1~] since the frequency response is the same) is 'common 
> knowledge', so I don't think you'd have to pay attention to any licence.
>
>
>> Gesendet: Samstag, 15. Oktober 2016 um 13:52 Uhr
>> Von: "Christof Ressi" <christof.re...@gmx.at>
>> An: katja <katjavet...@gmail.com>, "Miller Puckette" <m...@ucsd.edu>
>> Cc: pd-list <pd-l...@iem.at>
>> Betreff: Re: [PD] could vanilla borrow iemlib's hi pass filter recipe?
>>
>> > But coefficients aren't recalculated so
>> > often, therefore this difference will be negligible.
>>
>> That's a good point. You're right that both involve a feedback and 
>> feedforward, so I'm wondering why [hp1~] needs more CPU... otherwise, 
>> iemlib's filters are very efficient.
>>
>> Anyway, I researched a bit and found the reason why the frequency response 
>> of Pd filters seems 'wrong':
>>
>> Miller uses a formular for calculating the cutoff frequency which is taken 
>> from analog filters but is not really adequate for digital filters since it 
>> doesn't reflect the cyclic nature of the digital domain (although you can 
>> see it in some articles on digital filters).
>>
>> Let's take [hip~] as an example:
>>
>> the formular for a 1-pole 1-zero highpass goes:
>> y[n] = (x[n] - x[n-1]) * (1 + k) / 2   +   k * y[n-1]
>>
>> Miller calculates the position of the pole with
>> k = 1 - (fc * 2*pi / SR).
>>
>> The correct formular, however (if you want the frequency response to be zero 
>> at Nyquist!), would be
>> k = (1-sin(a))/cos(a), where a = fc * 2*pi / SR.
>>
>> You can find it here: http://www.arpchord.com/pdf/ 
>> coeffs_first_order_filters_ 0p1.pdf
>>
>> BTW, the reason why [hip~] seems to get stuck at 7018 Hz is because Miller 
>> clips the coefficient below 0, so it never reaches -1 (where the gain would 
>> be all zero).
>>
>> Also, there is another approximation with a similiar be

Re: [PD] [PD-dev] Rewrite wrap~ to allow an extra block

2016-09-29 Thread Ed Kelly via Pd-list

Thanks Pierre. Trying it now.
This thing doesn't immediately crash or segfault, so I'm onto a winner 
eventually :)
I understand my brain is slightly more dead than it was. But we can move 
forward now.Cheers,Ed
 Lone Shark releases: Light Vessel Automatic available now on 12" vinyl.Build 
Your Wings on the Way Down, the new digital album available @ 
http://scifirecords.co.uk/releases 
Earthlings compilation is out now @ http://www.pyramidtransmissions.com

Ninja Jamm - the revolutionary music remix app for iOS and Android: 
http://www.ninjajamm.com/

Gemnotes-0.2: Live music notation for Pure Data, and Metastudio 5 live 
composition and improvisation suite, available at 
http://sharktracks.co.uk/puredata 

On Thursday, 29 September 2016, 12:27, Pierre Guillot 
<guillotpier...@gmail.com> wrote:
 
 

 Hi Ed,The prototype of your perform method is wrong. You should have something 
like:static t_int *wrap_overshoot_tilde_perform( t_int *w){    
t_wrap_overshoot_tilde *x = (t_wrap_overshoot_tilde *)(w[1]);    t_sample *in  
= (t_sample *)(w[2]);    t_sample *out = (t_sample *)(w[3]);    t_int n       = 
(t_int)(w[4]);    ...    return w+5;}
and the dsp_add method should be called like this:dsp_add((t_perfroutine)wrap_ 
overshoot_tilde_perform, 4, (t_int)x, (t_int)sp[0]->s_vec, (t_int)sp[1]->s_vec, 
(t_int)sp[0]->s_n);
About what you want to do, I would like to help but I'm not sure to understand. 
I understand that you want that your object performs at the end of the DSP 
chain (end of the audio block) on a signal that should be computed previously 
in the DSP chain but as we all know only the Matthew McConaughey from 
Interstellar has this power :).
Cheers,
Pierre
2016-09-29 12:00 GMT+02:00 Ed Kelly via Pd-dev <pd-...@lists.iem.at>:

Hey list,I'm tearing my hair out trying to re-write the wrap~ object, so that 
it doesn't wrap instantly but waits until the end of the audio block to wrap~ 
the signal. I hope you understand.
This is so that control-rate messages sent to another object further down the 
signal-path have a chance to catch up, and eliminate clicks due to the 
end-of-block delay for control messages.
The idea is that wrap_overshoot~ will not wrap until the end of the block. This 
is a really tech-y problem, but I've tried variables and clocks. Everything 
seems to segfault on me.
?Lots of love,Ed
PS if this works you'll all be able to use it during and after pdcon16~

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[PD] Rewrite wrap~ to allow an extra block

2016-09-29 Thread Ed Kelly via Pd-list

Hey list,I'm tearing my hair out trying to re-write the wrap~ object, so that 
it doesn't wrap instantly but waits until the end of the audio block to wrap~ 
the signal. I hope you understand.
This is so that control-rate messages sent to another object further down the 
signal-path have a chance to catch up, and eliminate clicks due to the 
end-of-block delay for control messages.
The idea is that wrap_overshoot~ will not wrap until the end of the block. This 
is a really tech-y problem, but I've tried variables and clocks. Everything 
seems to segfault on me.
?Lots of love,Ed
PS if this works you'll all be able to use it during and after pdcon16~
#include "m_pd.h"

typedef struct wrap_overshoot_tilde
{
t_object x_obj;
t_float x_f;
  int overShoot, shootFlag, k_i;
  t_float token, storeLast;
  t_sample f_s;
  t_clock *x_clock;

} t_wrap_overshoot_tilde;

t_class *wrap_overshoot_tilde_class;

void wrap_overshoot_tilde_tick(t_wrap_overshoot_tilde *x)
{
  x->shootFlag = 1;


}

static void *wrap_overshoot_tilde_new(void)
{
t_wrap_overshoot_tilde *x = (t_wrap_overshoot_tilde *)pd_new(wrap_overshoot_tilde_class);
outlet_new(>x_obj, gensym("signal"));
x->x_f = 0;
x->overShoot = 0;
x->shootFlag = 0;
x->f_s = 0;
x->k_i = 0;
x->storeLast = 0;
x->x_clock = clock_new(x, (t_method)wrap_overshoot_tilde_tick);
return (x);
}

static t_int *wrap_overshoot_tilde_perform(t_int *w, t_wrap_overshoot_tilde *x)
{
t_sample *in = *(t_sample **)(w+1), *out = *(t_sample **)(w+2);
t_int n = *(t_int *)(w+3);
/*if(x->overShoot > 0)
  {
	x->shootFlag = 1;
	//	x->overShoot = 0;
  }
else if(x->overShoot == 0)
  {
	x->shootFlag = 1;
	}*/

	// else if(x->overShoot == 0) x->shootFlag = 0;
while(n--)
{
x->f_s = *in++;
x->k_i = x->f_s;
	if (x->storeLast < 1 && (x->f_s - x->k_i) >= 1)
	  {
	//	*out++ = x->f_s - x->k_i;
	clock_delay(x->x_clock, 0);
	  }
	if(x->shootFlag == 1)
	  {
	*out++ = x->f_s - x->k_i;
	  }
	else if (x->f_s > 0) *out++ = x->f_s - x->k_i;
else *out++ = x->f_s - (x->k_i - 1);
	x->storeLast = (float)(x->f_s - x->k_i);
}
if(x->shootFlag == 1) x->shootFlag = 0;
return (w + 4);
}

static void wrap_overshoot_tilde_dsp(t_wrap_overshoot_tilde *x, t_signal **sp)
{
dsp_add(wrap_overshoot_tilde_perform, 3, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n);
}

void wrap_overshoot_tilde_setup(void)
{
  wrap_overshoot_tilde_class = class_new(gensym("wrap_overshoot~"), 
  (t_newmethod)wrap_overshoot_tilde_new, 
  0, sizeof(t_wrap_overshoot_tilde),
  CLASS_DEFAULT, A_DEFFLOAT, 0);
CLASS_MAINSIGNALIN(wrap_overshoot_tilde_class, t_wrap_overshoot_tilde, x_f);
class_addmethod(wrap_overshoot_tilde_class, (t_method)wrap_overshoot_tilde_dsp,
gensym("dsp"), A_CANT, 0);
}
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[PD] Pd vanilla problem on Debian

2016-09-04 Thread Ed Kelly via Pd-list

Hey list,
I've got Pd-l2ork on my debian distro. It's great, but I've noticed than some 
of my GUI-heavy patches are pretty unusable on this, so I've tried to install 
Pd-vanilla alongside it, both through Debian repos and by compiling from source.
I get this error message when I try to run Pd from the command line:Error in 
startup script: couldn't read file "/usr/lib/pd/tcl//pd-gui.tcl": no such file 
or directoryAny clue as to what's up?Cheers,Ed
 Lone Shark releases: Light Vessel Automatic available now on 12" vinyl.Build 
Your Wings on the Way Down, the new digital album available @ 
http://scifirecords.co.uk/releases 
Earthlings compilation is out now @ http://www.pyramidtransmissions.com

Ninja Jamm - the revolutionary music remix app for iOS and Android: 
http://www.ninjajamm.com/

Gemnotes-0.2: Live music notation for Pure Data, and Metastudio 5 live 
composition and improvisation suite, available at 
http://sharktracks.co.uk/puredata___
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Re: [PD] Ninja Jamm [was] Re: In support of my paper

2016-09-04 Thread Ed Kelly via Pd-list

Oooh, I don't know! The .apk is hosted on g-play, and I don't think there are 
plans to make it available through other means.
While I'm not responsible for the Android version (actually I'm only 
responsible for most of the audio engine) I can mention this to Antoine who 
maintains that version next time we have our regular Skype meeting. We're 
trying to keep things simple with regards to distribution, and Android is 
indeed a headache since it involves a gazillion different devices with 
different hardware configs.
Of course in an ideal world the infrastructure would not be controlled by a 
handful of huge corporations, but this is out of my hands. I'll let you know if 
there's any change to this issue.
Cheers,Ed

 Lone Shark releases: Light Vessel Automatic available now on 12" vinyl.Build 
Your Wings on the Way Down, the new digital album available @ 
http://scifirecords.co.uk/releases 
Earthlings compilation is out now @ http://www.pyramidtransmissions.com

Ninja Jamm - the revolutionary music remix app for iOS and Android: 
http://www.ninjajamm.com/

Gemnotes-0.2: Live music notation for Pure Data, and Metastudio 5 live 
composition and improvisation suite, available at 
http://sharktracks.co.uk/puredata 

On Sunday, 4 September 2016, 11:18, Julian Brooks <jbee...@gmail.com> wrote:
 
 

 Hi Ed,

Is there a direct download of Ninja Jamm available (or other store)?

I'm (slowly) attempting to de-google my life and would like to not have g-play 
on my Jolla mobile phone. Although running the Jolla O.S. 'Sailfish' (an 
Opensuse fork), the phone has Alien Dalvik for running android apps.

Here's hoping.

Regards,

Julian


On 26 August 2016 at 23:34, Ed Kelly via Pd-list <pd-list@lists.iem.at> wrote:

Sorry not to include references in one of my papers.Just published here:Take 
1Enjoy!

|   |
|   |  |   |   |   |   |   |
| Take 1 |
|  |
| View on www.youtube.com | Preview by Yahoo |
|  |
|   |

 Lone Shark releases: Light Vessel Automatic available now on 12" vinyl.Build 
Your Wings on the Way Down, the new digital album available @ 
http://scifirecords.co.uk/ releases 
Earthlings compilation is out now @ http://www. pyramidtransmissions.com

Ninja Jamm - the revolutionary music remix app for iOS and Android: 
http://www.ninjajamm.com/

Gemnotes-0.2: Live music notation for Pure Data, and Metastudio 5 live 
composition and improvisation suite, available at http://sharktracks.co.uk/ 
puredata
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Re: [PD] Package and sources for complex-mod~ and hilbert~ ?

2016-08-31 Thread Ed Kelly via Pd-list

Ah foobar.
Sorry, this is how I found [import] to work.I must update my neurons to the 
2016 scheme.Ed
 

On Wednesday, 31 August 2016, 14:36, IOhannes m zmölnig <zmoel...@iem.at> 
wrote:
 
 

 On 08/31/2016 03:20 PM, Ed Kelly via Pd-list wrote:
> This will make the [declare] object the first object in the Pd patch?

why should that be needed?
[declare] has a built-in mechanism to get called first when a patch is
loaded, regardless of whether the object was created first, last or
somewhen between.

gfmasdr
IOhannes

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[PD] Paper submission, camera-ready?

2016-08-31 Thread Ed Kelly via Pd-list

Hi Jaime,
Will there be a "camera-ready" submission after the announcement date as there 
is with ICMC? I have references to add, and to update links on the papers I 
submitted.Also, it would be great to do poster/demo sessions with both the 
papers I submitted. Is this exclusively paper or demo? or could I do both?
Cheers,Ed Kelly Lone Shark releases: Light Vessel Automatic available now on 
12" vinyl.Build Your Wings on the Way Down, the new digital album available @ 
http://scifirecords.co.uk/releases 
Earthlings compilation is out now @ http://www.pyramidtransmissions.com

Ninja Jamm - the revolutionary music remix app for iOS and Android: 
http://www.ninjajamm.com/

Gemnotes-0.2: Live music notation for Pure Data, and Metastudio 5 live 
composition and improvisation suite, available at 
http://sharktracks.co.uk/puredata___
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Re: [PD] Package and sources for complex-mod~ and hilbert~ ?

2016-08-31 Thread Ed Kelly via Pd-list

Perhaps this is a bug with the 64bit version of Pd. I don't know.
I've noticed though, that when using my Metastudio abstractions in newer 
distributions of Pd (L2ork, vanilla with separately compiled externals) I often 
have to [import] objects or [declare] paths in order to load them.
If you are using earlier patches you have made, then what you can do is create 
the [declare] object with your path e.g. [declare -stdpath 
/Applications/Pd-0.47-1-64bit.app/Contents/Resources/extra], then select all, 
un-select the [declare] object, cut and then paste the rest of the objects.
This will make the [declare] object the first object in the Pd patch, and the 
rest should work as it did before.
I'm gradually worming through my Metastudio abstractions to make them 
compatible with whatever version is being used by whomever downloads them 
(provided they have the externals installed).Cheers,Ed Lone Shark releases: 
Light Vessel Automatic available now on 12" vinyl.Build Your Wings on the Way 
Down, the new digital album available @ http://scifirecords.co.uk/releases 
Earthlings compilation is out now @ http://www.pyramidtransmissions.com

Ninja Jamm - the revolutionary music remix app for iOS and Android: 
http://www.ninjajamm.com/

Gemnotes-0.2: Live music notation for Pure Data, and Metastudio 5 live 
composition and improvisation suite, available at 
http://sharktracks.co.uk/puredata 

On Monday, 29 August 2016, 22:05, Alexandre Torres Porres 
 wrote:
 
 

 2016-08-29 17:43 GMT-03:00 Miller Puckette :
It should be automatically found by Pd as long as "use standard extensions" is 
checked in the "path" preferences dialog (which it normally should be by 
default).


oh, didnt know about this box, unchecked it and yep, no dice... :)
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[PD] In support of my paper

2016-08-26 Thread Ed Kelly via Pd-list

Sorry not to include references in one of my papers.Just published here:Take 
1Enjoy!

|   |
|   |  |   |   |   |   |   |
| Take 1 |
|  |
| View on www.youtube.com | Preview by Yahoo |
|  |
|   |

 Lone Shark releases: Light Vessel Automatic available now on 12" vinyl.Build 
Your Wings on the Way Down, the new digital album available @ 
http://scifirecords.co.uk/releases 
Earthlings compilation is out now @ http://www.pyramidtransmissions.com

Ninja Jamm - the revolutionary music remix app for iOS and Android: 
http://www.ninjajamm.com/

Gemnotes-0.2: Live music notation for Pure Data, and Metastudio 5 live 
composition and improvisation suite, available at 
http://sharktracks.co.uk/puredata___
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Re: [PD] loading random samples

2016-02-12 Thread Ed Kelly

PS you can't save folders in Windows, but you're probably using a Mac, right? 
Ninja Jamm - a revolutionary music remix app from Ninja Tune and Seeper, for 
iOS and Android: http://www.ninjajamm.com/

Gemnotes-0.2: Live music notation for Pure Data, now with dynamics! 
http://sharktracks.co.uk/puredata
also Metastudio 5! 

On Saturday, 13 February 2016, 4:10, Ed Kelly <morph_2...@yahoo.co.uk> 
wrote:
 
 

 If you use wavebank~ from the Metastudio abstractions, you can load a folder 
of samples in one go. You can then use wavevoice~ to play them back using a 
simple [random] object.
Ed Ninja Jamm - a revolutionary music remix app from Ninja Tune and Seeper, for 
iOS and Android: http://www.ninjajamm.com/

Gemnotes-0.2: Live music notation for Pure Data, now with dynamics! 
http://sharktracks.co.uk/puredata
also Metastudio 5! 

On Friday, 12 February 2016, 21:52, Alexandros Drymonitis 
<adr...@gmail.com> wrote:
 
 

 

On Fri, Feb 12, 2016 at 11:12 PM, Spyros Polychronopoulos 
<spypolym...@gmail.com> wrote:

Thank you very much for your kind feedback! Especially Alexandros very detailed 
answer, thank you very much!
Also you mention something about an example did you attach something that I can 
not find or you mean the discussed example?

I meant the "example" I described. No attachment, sorry for the confusion. 
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[PD] wavefolder (was Re: hacked? (was Re: ))

2016-02-08 Thread Ed Kelly

Oh NOT AGAIN! My Yahoo account got hacked! I've changed my password.

|| This email has been sent from a virus-free computer protected by Avast. 
www.avast.com  |

I should have gone for something better than Yahoo mail back in 2005. Thanks IO!

PS do you know anyone who could resolve a transformation between the Fourier 
series:
  - 
   -

and   
  - 
   -

?I'm trying to write a paper about wavefolder~ for ICMC 2016, and my maths 
isn't that good!
   
   - Thanks for the heads-up man,
  - Ed   

 Ninja Jamm - a revolutionary music remix app from Ninja Tune and Seeper, for 
iOS and Android: http://www.ninjajamm.com/

Gemnotes-0.2: Live music notation for Pure Data, now with dynamics! 
http://sharktracks.co.uk/puredata
also Metastudio 5! 

On Monday, 8 February 2016, 9:21, IOhannes m zmölnig 
<zmoel...@umlaeute.mur.at> wrote:
 
 

 -BEGIN PGP SIGNED MESSAGE-
Hash: SHA256

hi ed,

i hope you are allright.

i just received this email from supposedly your account, and wonder
what the meaning of it is...

On 2016-02-08 09:58, Ed Kelly wrote:
> blockquote, div.yahoo_quoted { margin-left: 0 !important;
> border-left:1px #715FFA solid !important;  padding-left:1ex
> !important; background-color:white !important; }
> http://zipaiwu.com/struck.php   Ed Kelly Sent from Yahoo Mail for
> iPhone

fgmasdr
IOhannes

-BEGIN PGP SIGNATURE-
Version: GnuPG v2

iQIcBAEBCAAGBQJWuF4dAAoJELZQGcR/ejb4lcIP/i9w4FX587EoH+nQ0klHs1y0
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CA0eAOPyUrUs1I58Az4i
=BykK
-END PGP SIGNATURE-


 
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Re: [PD] wavefolder (was Re: hacked? (was Re: ))

2016-02-08 Thread Ed Kelly

Ow!Life hands me lemons. I'd better stop pondering this theoretical fluff and 
get on with some real work!Ed
 Ninja Jamm - a revolutionary music remix app from Ninja Tune and Seeper, for 
iOS and Android: http://www.ninjajamm.com/

Gemnotes-0.2: Live music notation for Pure Data, now with dynamics! 
http://sharktracks.co.uk/puredata
also Metastudio 5! 

On Monday, 8 February 2016, 15:12, Ed Kelly <morph_2...@yahoo.co.uk> wrote:

 Oh NOT AGAIN! My Yahoo account got hacked! I've changed my password.

|| This email has been sent from a virus-free computer protected by Avast. 
www.avast.com  |

I should have gone for something better than Yahoo mail back in 2005. Thanks IO!

PS do you know anyone who could resolve a transformation between the Fourier 
series:
  - 
   -

and   
  - 
   -

?I'm trying to write a paper about wavefolder~ for ICMC 2016, and my maths 
isn't that good!

   - Thanks for the heads-up man,
  - Ed   

 Ninja Jamm - a revolutionary music remix app from Ninja Tune and Seeper, for 
iOS and Android: http://www.ninjajamm.com/

Gemnotes-0.2: Live music notation for Pure Data, now with dynamics! 
http://sharktracks.co.uk/puredata
also Metastudio 5! 

On Monday, 8 February 2016, 9:21, IOhannes m zmölnig 
<zmoel...@umlaeute.mur.at> wrote:

 -BEGIN PGP SIGNED MESSAGE-
Hash: SHA256

hi ed,

i hope you are allright.

i just received this email from supposedly your account, and wonder
what the meaning of it is...

On 2016-02-08 09:58, Ed Kelly wrote:
> blockquote, div.yahoo_quoted { margin-left: 0 !important;
> border-left:1px #715FFA solid !important;  padding-left:1ex
> !important; background-color:white !important; }
> http://zipaiwu.com/struck.php   Ed Kelly Sent from Yahoo Mail for
> iPhone

fgmasdr
IOhannes

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Re: [PD] Advice on bonk~ with bass guitar

2015-11-30 Thread Ed Kelly

Yep.I tried all sorts of slowing down my playing and so forth, but it is as I 
feared. I am going to have to edit every damn note of Electric Counterpoint by 
hand!
I used to like the piece. After being commissioned to make another backing 
"tape" and having most of the guitar complete I've felt like an editing robot 
for months. Only another 18276357848596 notes to go then...
Ah well, onwards with it. There were a few bits where I could bonk~ the 
monophonic guitar lines at the beginning, with limited success. My note-by-note 
dynamics reconstructor is great though.
Ed Ninja Jamm - a revolutionary new music remix app from Ninja Tune and Seeper, 
for iPhone and iPad http://www.ninjajamm.com/ Gemnotes-0.2: Live music notation 
for Pure Data, now with dynamics! http://sharktracks.co.uk/  

On Thursday, 26 November 2015, 0:46, Miller Puckette <m...@ucsd.edu> wrote:

 I think this will be very hard to do reliably.  I can't get perfectly reliable
attacks for a guitar, even with the strings separated.  I heard a rumor that
some neural net thing might work better than bonk~ for strings but never saw
it myself.

cheers
Miller

On Wed, Nov 25, 2015 at 02:31:37PM +, Ed Kelly wrote:
> Hi List,
> I'm trying to use bonk~ to segment bass guitar. I want to capture every note. 
> Does anyone have any advice to optimize the settings of bonk~ for this?
> Cheers,Ed
>  Ninja Jamm - a revolutionary new music remix app from Ninja Tune and Seeper, 
> for iPhone and iPad http://www.ninjajamm.com/ Gemnotes-0.2: Live music 
> notation for Pure Data, now with dynamics! http://sharktracks.co.uk/ 

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[PD] Advice on bonk~ with bass guitar

2015-11-25 Thread Ed Kelly

Hi List,
I'm trying to use bonk~ to segment bass guitar. I want to capture every note. 
Does anyone have any advice to optimize the settings of bonk~ for this?
Cheers,Ed
 Ninja Jamm - a revolutionary new music remix app from Ninja Tune and Seeper, 
for iPhone and iPad http://www.ninjajamm.com/ Gemnotes-0.2: Live music notation 
for Pure Data, now with dynamics! http://sharktracks.co.uk/ ___
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Re: [PD] Fw: [PD-dev] Mouse over editing Pd patch

2015-01-13 Thread Ed Kelly

Yes, that's what I mean. Maybe I'm suggesting a new mode, where the mouse move 
only makes the proc routine run after it's stopped for perhaps 100ms.The reason 
is: abstracting the mega patch leads to a decrease in performance on iOs 
devices, and in 2012 I discovered that it abstractions that use audio ups the 
CPU load on any Pd patch. I think it's because the abstraction is taken to be a 
separate audio graph to calculate that is worked out before the CPU folds this 
into the master patch's audio input/output graph.Thus, I have to unwrap the 
patch (put all the audio processes into the master patch, without subpatches or 
abstractions) before it will run on the iPhone.
Jonathan - will the -d command sent to Pd enable a lower rate of tk mouse 
motion events?
Cheers,Ed 

Ninja Jamm - a revolutionary new music remix app from Ninja Tune and Seeper, 
for iPhone and iPad
http://www.ninjajamm.com/

Gemnotes-0.2: Live music notation for Pure Data, now with dynamics!
http://sharktracks.co.uk/  

 On Wednesday, 7 January 2015, 20:18, Jonathan Wilkes jancs...@yahoo.com 
wrote:
   
 

 Hi Ed,When you move the mouse on a canvas...1) A tk mouse motion event calls a 
proc (I can't remember the rate at which they are sent, but run Pd with -d 3 
and watch how many motion messages are sent over the socket as you mouse around)
2) The proc sends a message [canvas you're mousing around in] motion blah blah 
blah to the Pd process
3) Pd forwards the message to the canvas you're mousing around on, by calling 
the motion method
4) canvas_motion leads to canvas_doclick, which leads to this:for (y = 
x-gl_list; y; y = y-g_next)
So for each motion message, Pd searches through a linked list of objects on the 
canvas either until it finds one under the mouse or it runs out of objects.  If 
you only have a [bng] and a subpatch on the canvas, it probably is 
insignificant-- it's just comparing two saved bbox coordinates to the mouse 
position.  If you have your entire monster patch on a single canvas, just 
following all those pointers in the linked list is probably taking its toll on 
Pd's ability to compute a block of audio on schedule.
-Jonathan


 On Wednesday, January 7, 2015 12:21 PM, Ed Kelly morph_2...@yahoo.co.uk 
wrote:
   

 On Wednesday, 7 January 2015, 11:55, Ed Kelly morph_2...@yahoo.co.uk wrote:
  

 
 

 What about this...
When I am editing a huge patch like the Ninja Jamm patch, where everything is 
on the same level (i.e. as few sub-patches as possible) moving the mouse over 
the patch causes a CPU spike, regardless of whether I change, move or connect 
anything or not.
Could this be changed? I don't know all the guts of Pd, but if you could just 
move around the mouse pointer withouthaving to wait for 20 seconds or so before 
you can do anything, it would save a lot of time.

I think I heard once that any change to the patch means that Pd has to re-draw 
the entire graph. IMHO surely moving the mouse should not require this? I wait 
to be corrected! xEd

Ninja Jamm - a revolutionary new music remix app from Ninja Tune and Seeper, 
for iPhone and iPad
http://www.ninjajamm.com/

Gemnotes-0.2: Live music notation for Pure Data, now with dynamics!
http://sharktracks.co.uk/ 
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Re: [PD] Fw: [PD-dev] Mouse over editing Pd patch: correction

2015-01-13 Thread Ed Kelly

Sorry, I mean't an increase in performance with the mega-patch (lower CPU load) 
and a decrease with subpatches and abstractions (higher CPU load).Ed Ninja Jamm 
- a revolutionary new music remix app from Ninja Tune and Seeper, for iPhone 
and iPad
http://www.ninjajamm.com/

Gemnotes-0.2: Live music notation for Pure Data, now with dynamics!
http://sharktracks.co.uk/  

 On Tuesday, 13 January 2015, 16:26, Ed Kelly morph_2...@yahoo.co.uk 
wrote:
   
 

 Yes, that's what I mean. Maybe I'm suggesting a new mode, where the mouse move 
only makes the proc routine run after it's stopped for perhaps 100ms.The reason 
is: abstracting the mega patch leads to a decrease in performance on iOs 
devices, and in 2012 I discovered that it abstractions that use audio ups the 
CPU load on any Pd patch. I think it's because the abstraction is taken to be a 
separate audio graph to calculate that is worked out before the CPU folds this 
into the master patch's audio input/output graph.Thus, I have to unwrap the 
patch (put all the audio processes into the master patch, without subpatches or 
abstractions) before it will run on the iPhone.
Jonathan - will the -d command sent to Pd enable a lower rate of tk mouse 
motion events?
Cheers,Ed 

Ninja Jamm - a revolutionary new music remix app from Ninja Tune and Seeper, 
for iPhone and iPad
http://www.ninjajamm.com/

Gemnotes-0.2: Live music notation for Pure Data, now with dynamics!
http://sharktracks.co.uk/  

 On Wednesday, 7 January 2015, 20:18, Jonathan Wilkes jancs...@yahoo.com 
wrote:
   
 

 Hi Ed,When you move the mouse on a canvas...1) A tk mouse motion event calls a 
proc (I can't remember the rate at which they are sent, but run Pd with -d 3 
and watch how many motion messages are sent over the socket as you mouse around)
2) The proc sends a message [canvas you're mousing around in] motion blah blah 
blah to the Pd process
3) Pd forwards the message to the canvas you're mousing around on, by calling 
the motion method
4) canvas_motion leads to canvas_doclick, which leads to this:for (y = 
x-gl_list; y; y = y-g_next)
So for each motion message, Pd searches through a linked list of objects on the 
canvas either until it finds one under the mouse or it runs out of objects.  If 
you only have a [bng] and a subpatch on the canvas, it probably is 
insignificant-- it's just comparing two saved bbox coordinates to the mouse 
position.  If you have your entire monster patch on a single canvas, just 
following all those pointers in the linked list is probably taking its toll on 
Pd's ability to compute a block of audio on schedule.
-Jonathan


 On Wednesday, January 7, 2015 12:21 PM, Ed Kelly morph_2...@yahoo.co.uk 
wrote:
   

 On Wednesday, 7 January 2015, 11:55, Ed Kelly morph_2...@yahoo.co.uk wrote:
  

 
 

 What about this...
When I am editing a huge patch like the Ninja Jamm patch, where everything is 
on the same level (i.e. as few sub-patches as possible) moving the mouse over 
the patch causes a CPU spike, regardless of whether I change, move or connect 
anything or not.
Could this be changed? I don't know all the guts of Pd, but if you could just 
move around the mouse pointer withouthaving to wait for 20 seconds or so before 
you can do anything, it would save a lot of time.

I think I heard once that any change to the patch means that Pd has to re-draw 
the entire graph. IMHO surely moving the mouse should not require this? I wait 
to be corrected! xEd

Ninja Jamm - a revolutionary new music remix app from Ninja Tune and Seeper, 
for iPhone and iPad
http://www.ninjajamm.com/

Gemnotes-0.2: Live music notation for Pure Data, now with dynamics!
http://sharktracks.co.uk/ 
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[PD] Fw: [PD-dev] Mouse over editing Pd patch

2015-01-07 Thread Ed Kelly

On Wednesday, 7 January 2015, 11:55, Ed Kelly morph_2...@yahoo.co.uk wrote:
  

 
 

 What about this...
When I am editing a huge patch like the Ninja Jamm patch, where everything is 
on the same level (i.e. as few sub-patches as possible) moving the mouse over 
the patch causes a CPU spike, regardless of whether I change, move or connect 
anything or not.
Could this be changed? I don't know all the guts of Pd, but if you could just 
move around the mouse pointer withouthaving to wait for 20 seconds or so before 
you can do anything, it would save a lot of time.

I think I heard once that any change to the patch means that Pd has to re-draw 
the entire graph. IMHO surely moving the mouse should not require this? I wait 
to be corrected! xEd

Ninja Jamm - a revolutionary new music remix app from Ninja Tune and Seeper, 
for iPhone and iPad
http://www.ninjajamm.com/

Gemnotes-0.2: Live music notation for Pure Data, now with dynamics!
http://sharktracks.co.uk/ 
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Re: [PD] Cyclone suite initiative

2014-12-06 Thread Ed Kelly

Hey guys,
Are there any plans to get toxy/tot included in pd-extended? I find it very 
useful.Cheers,Ed
 Ninja Jamm - a revolutionary new music remix app from Ninja Tune and Seeper, 
for iPhone and iPad
http://www.ninjajamm.com/

Gemnotes-0.2: Live music notation for Pure Data, now with dynamics!
http://sharktracks.co.uk/  

 On Saturday, 6 December 2014, 10:00, Fred Jan Kraan fjkr...@xs4all.nl 
wrote:
   
 

 Hi Ivica, Jonathan,

Thanks for the response.

@Ivica:
 Why not simply use cyclone help patches provided in pd-l2ork that 
 already conform to the pddp standard?

The pd-l2ork help patches with standard format indeed look much better
than the 'free-style' pd-extended patches. That is why I use these as a
base.
But I do not copy them directly for several reasons:

- the lack of curly lines in pd-extended make pd-l2ork formatted patches
a little less clean than possible,
- not all patches are correct, usually because the original had the problem,
- the pd META information is incorrect (probably copied from an pd-core
object),
- to learn as much as possible of these objects, I try then to see if
they work and how. This can lead to changes to the patch.

Of course a mass copy would be a fast way to improve cyclone help, but
with the long term goal in mind, I think this slow method could result
in better help files. Later I will see how they look in pd-vanilla and
pd-l2ork and make adjustments.

@Jonathan:
 But then Pd Vanilla aficionados might complain that to use cyclone they 
 would be forced to also install the pddp library for [pddplink] and
 [helplink], because those objects do not ship with Pd Vanilla.
 Otherwise they would end up with a lot of broken objects in those
 help patches.
 
There seems to a 'rule' to make help-patches only dependent on vanilla
objects, and this makes sense. But maybe we can use a rich help-patch to
generate a vanilla-compliant one (see below).

 All the little Pd libraries in Debian don't help this problem, because 
 not every GNU/Linux distribution uses apt. (Nor does OSX or Windows,
 for that matter.)
 
The other main distribution tool is rpm. It might be interesting to know
how much of the Linux-market uses either deb or rpm.
For Windows and OSX, there is no ready made solution yet. But other
software packages have a cross-platform package distribution system; the
examples I know are perl (ActiveState) and cygwin. But is probably not
trival to build or adapt something for Pd.

 Also, I believe Hans emailed awhile back asking if I'd do the work 
 of removing the PDDP template boilerplate from the tutorial revisions 
 I did.  He wanted me to leave only the [pd META] subpatch, because
 that's evidently the only part Miller wanted to add to Vanilla.

Making help-patches as much as possible is also one of the modifications
I make to the pd-l2ork help-patches. So far I ignored the pddp code. But
removing the line with pddp/pddplink seems to work and this can be
scripted. But for pd environments that always have the complete set, it
is a great feature to have links.

Greetings,

Fred Jan

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Re: [PD] canvas_makefilename() returns error

2014-07-11 Thread Ed Kelly via Pd-list

Hey Jamie,

You making a notation library?

Ed
 
Ninja Jamm - a revolutionary new music remix app from Ninja Tune and Seeper, 
for iPhone and iPad
http://www.ninjajamm.com/


Gemnotes-0.2: Live music notation for Pure Data, now with dynamics!
http://sharktracks.co.uk/ 


On Monday, 30 June 2014, 6:42, Jaime E Oliver via Pd-list 
pd-list@lists.iem.at wrote:
 



Ah, yes, I see now. 


I solved it by adding:


 x-x_canvas = canvas_getcurrent();


in _new


thanks!


J


On Jun 29, 2014, at 11:56 PM, Jonathan Wilkes jancs...@yahoo.com wrote:

It's hard to say without seeing the code.


Does x-x_canvas actually point to a canvas?  The error seems to be telling 
you it isn't.

(Consistency check errors come from the bug() function.  Generally they occur 
when an argument, struct, or struct field is checked for existence and fails 
that check.)

-Jonathan

On Sunday, June 29, 2014 9:25 PM, Jaime E Oliver jaime.oliv...@gmail.com 
wrote:
 


Yes, 


in the main struct x_canvas is created as:


t_canvas *x_canvas;


So, I think that is not the problem.



J









On Jun 29, 2014, at 8:00 PM, Jonathan Wilkes jancs...@yahoo.com wrote:

Well, it expects a t_canvas *, so if you send it something else it will 
trigger the error.


-Jonathan




On Sunday, June 29, 2014 8:47 PM, Jaime E Oliver via Pd-list 
pd-list@lists.iem.at wrote:
 


Hi all, 

I am trying to use the canvas_makefilename() function in g_canvas.c

I am calling it like this: 

static void lilypond_write(t_lilypond *x, t_symbol *s) {
    char
 buf[MAXPDSTRING];
    canvas_makefilename(x-x_canvas, s-s_name, buf, MAXPDSTRING);
}

but when I send the object a message such as [write test.txt( or similar, I 
get:

error: consistency check failed: canvas_getenv
Bus error: 10

The method is set up like this:
    class_addmethod(lilypond_class, (t_method)lilypond_write, 
gensym(write), A_SYMBOL, 0);

Anybody has any
 suggestion?

best,

J

PS Sorry
 for pestering everyone with this, but there is little documentation on some of 
the functions in Pd. Perhaps this thread belong in the Pd-Dev list?
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Re: [PD] Legal restrictions for apps

2014-06-11 Thread Ed Kelly via Pd-list

Ah well. I'll just have to write a new one based on pd source code and 
first-principles!
That's what happens...
Ed

 
Ninja Jamm - a revolutionary new music remix app from Ninja Tune and Seeper, 
for iPhone and iPad
http://www.ninjajamm.com/


Gemnotes-0.2: Live music notation for Pure Data, now with dynamics!
http://sharktracks.co.uk/ 


On Monday, 9 June 2014, 23:00, Ed Kelly morph_2...@yahoo.co.uk wrote:
 



OK, so I realise I've made a fundamental mistake here.


For the latest update of the Pd patch I make for Ninja Tune, I used iem16. 
Looking at it now I realise that it has a GPL, not an LGPL license. So, I 
can't use it right? They won't release the source code for the entire app!


Oh shit. This is really serious!
Best,
Ed
 
Ninja Jamm - a revolutionary new music remix app from Ninja Tune and Seeper, 
for iPhone and iPad
http://www.ninjajamm.com/



Gemnotes-0.2: Live music notation for Pure Data, now with dynamics!
http://sharktracks.co.uk/ 



On Thursday, 6 February 2014, 8:11, Jonathan Wilkes jancs...@yahoo.com wrote:
 



On 02/05/2014 08:56 PM, Simon Wise wrote:
 On 06/02/14 00:36, Dan Wilcox wrote:
 Short answer: yes, it's
 sufficient to provide the object files and 
 static
 libs

 As far as my understanding of GPL  LGPL goes, you do not need to 
 publish
 your app sources when using LGPL libraries as the Lesser part of 
 the LGPL
 allows for distribution and is not viral.

 yes, though 'viral' is a misleading term  ... the GPL does not, 
 cannot, change any license for any other code, it is not infectious.

 The GPL is certainly more restrictive (regarding re-distribution, not 
 use, of the code covered) than for example the BSD or LGPL. It 
 restricts the right to distribute/propagate as part of a larger work 
 to works where the whole of the source code of that work is made 
 available for reuse, modification and re-distribution either under the 
 GPL or in any less restrictive way.

 In the second case the GPLed code would no longer be licensed for 
 distribution (and would have to be replaced or dropped or a different 
 license negotiated with its copyright owners) if the work as a whole 
 was modified and distributed with a more restrictive license. Whether 
 this is useful or not has been very widely debated.

There are two debates.

One is between devs who license their code with the GPL and devs who 
license their code with 3-clause BSD.  Both share what they make with 
the
 world.  Both keep publicly auditable databases of the changes to the 
software.  Both encourage smart, safe ways to design and maintain 
software and operating systems.

BSD devs notice that when they share with GPL devs, the GPL devs say, 
Thanks.  But when the BSD devs try to use what the GPL devs write they 
have to fuss with the license.  This is because the GPL essentially puts 
the golden rule into the license, whereas the BSD devs have a minimal 
license (probably as minimal as a license can be) and just follow the 
golden rule as human beings.

There are good reasons for both camps to do what they do, but it ends up 
requiring the BSD folks to care more about licenses than they'd like-- 
their license is only 3 clauses,
 after all!  So the BSD camp complains 
that when the GPL devs (like Linux Kernel devs) improve on code that was 
originally BSD, it comes back to the BSD folks infected with the GPL 
license which requires them to then care about licenses.  This is where 
the viral taunt comes from-- a genuine argument between two camps, 
both sharing what they make with everyone else to encourage a free and 
safe software ecosystem.

Another debate is between any company that produces proprietary software 
and a straw man in a corn field.  Here viral is irrelevant because the 
company isn't giving improvements back to the community.  Unfortunately 
this is probably what first pops to mind when people hear this 
argument-- that, somehow, the GPL can
 infect the business of selling a 
product and make it impossible for a company to make money.

But for better or for worse, we don't even need to consider minimal 
moral principles.  It's demonstrably dangerous to rely on software that 
doesn't have a pubic codebase and revision history. (Unfortunately I 
think it's for the better since most devs seem allergic to stating 
minimal moral principles.)

-Jonathan

 The motivation for the GPL is stated in the license and the LGPL was 
 written to cover some cases where the authors considered a less 
 restrictive license useful.


 Simon


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