Re: [PD] alsa and jack on ARM/Wandbaord

2013-09-23 Thread IOhannes m zmölnig
On 09/22/13 21:00, Chris Clepper wrote:
 I've got a Wandboard* here for some testing and I can't get Alsa to work in
 duplex.  Testing with arecord produces a soundfile and aplay plays it back.
  But starting Pd with Alsa or jack gives the dreaded errors about the
 resource being in use.  

i did some tests with the wandboard and an external USB soundcard, and i
*never* managed to get jackd running stable for longer (the project
required that audio would work for days and weeks without restart).
so i ended up using a complicated (compared to jack) plugin system based
on ALSA.
it turned out that the timing on the wandboard is much too imprecise for
jack (and the connected cheapo USB-soundcard did not help)

obviously this is not the problem you are facing here (as i did get full
duplex sound), but maybe this info is of some other use...

fgmasdr
IOhannes



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Re: [PD] alsa and jack on ARM/Wandbaord

2013-09-23 Thread dreamer
I have found that jack on ARM has some issues that are only fixed in
current jack2, not jack1.
So see if you can get jack2 running and report.


Hopefully this helps or is another clue.


On Mon, Sep 23, 2013 at 8:25 AM, IOhannes m zmölnig zmoel...@iem.at wrote:

 On 09/22/13 21:00, Chris Clepper wrote:
  I've got a Wandboard* here for some testing and I can't get Alsa to work
 in
  duplex.  Testing with arecord produces a soundfile and aplay plays it
 back.
   But starting Pd with Alsa or jack gives the dreaded errors about the
  resource being in use.

 i did some tests with the wandboard and an external USB soundcard, and i
 *never* managed to get jackd running stable for longer (the project
 required that audio would work for days and weeks without restart).
 so i ended up using a complicated (compared to jack) plugin system based
 on ALSA.
 it turned out that the timing on the wandboard is much too imprecise for
 jack (and the connected cheapo USB-soundcard did not help)

 obviously this is not the problem you are facing here (as i did get full
 duplex sound), but maybe this info is of some other use...

 fgmasdr
 IOhannes


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Re: [PD] alsa and jack on ARM/Wandbaord

2013-09-23 Thread IOhannes m zmoelnig
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

On 2013-09-23 09:36, dreamer wrote:
 I have found that jack on ARM has some issues that are only fixed
 in current jack2, not jack1. So see if you can get jack2 running
 and report.

i remember there was some problem with memory alignment (leading to
segfaults) that had been fixed already in my version of jack2.

or was there something else?

fgmad
IOhannes
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Re: [PD] Gridflow and fonts on Raspberry Pi

2013-09-23 Thread Jack
Le 23/09/2013 02:27, Patrice Colet a écrit :
  I've collected some tricks since I'm using sys_gui, attached are the ones 
 you might need to build and communicate with your interface through pd, if 
 sys_gui is ok on raspberry, all the tcl and tk code is fully documented 
 online...

 Tested on Pd 0.45.0

 Colet Patrice

 - Mail original -
 De: Colet Patrice colet.patr...@free.fr
 À: Jack j...@rybn.org, pd-list@iem.at
 Envoyé: Dimanche 22 Septembre 2013 21:29:24
 Objet: Re: [PD] Gridflow and fonts on Raspberry Pi

 Hello jack,

   I don't know about raspberry, but it seems tcltk is used for te
   GUI,
 so what about using [sys_gui] for generating the interface?

   a toplevel -fullscreen should be able to do what you are looking
   for,
 it's also possible to create fonts

 Le 22/09/2013 19:10, Jack a écrit :
 Hello,

 I found gridflow for Raspberry Pi here :
 http://artengine.ca/acastonguay/gridflow/
 And see a message from Claude here about Gridflow font :
 http://lists.puredata.info/pipermail/pd-list/2006-01/034431.html

 My questions :
 I would like to use Raspberry Pi and Pd to render text on a screen.
 I guess Gridflow could be the right library to use if it can manage
 fonts and if it is stable on RPi ?
 Is there an other library (or idea) for this purpose ? For example
 : a
 pd window in fullscreen with a canvas with text ? In this case, how
 to
 achieve that (fullscreen without menubar and window title bar with
 pd).

 I am on raspbian :
 PRETTY_NAME=Raspbian GNU/Linux 7 (wheezy)
 NAME=Raspbian GNU/Linux
 VERSION_ID=7
 VERSION=7 (wheezy)
 Linux raspberrypi 3.6.11+ #538 PREEMPT Fri Aug 30 20:42:08 BST 2013
 armv6l GNU/Linux
 with Pd-0.45.2 () compiled 16:14:18 Sep 17 2013.
 Thanx for any help.
 ++

 Jack



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Hello Patrice,

Very nice ! Ijust test your patch with Pd-0.45.0 (test 2) on Ubuntu
13.04 and it is working perfectly.
Thanx a lot, I will test soon on Raspberry Pi.
++

Jack



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Re: [PD] from poles/zeros to biquad coefficients - how to? (something like max's z-plane)

2013-09-23 Thread Funs Seelen
Hi Alexandre,

Great that you're doing this! For extra inspiration you could have a look
at PoZeTools (http://kmt.hku.nl/~pieter/SOFT/RESP/html/PoZeTools.html).
It's great software by Pieter Suurmond. He's the one who taught me filter
design and he probably has some info about Z-transform on his website as
well.

Regards,
--Funs


On Mon, Sep 23, 2013 at 7:37 AM, Alexandre Torres Porres
por...@gmail.comwrote:

 Hi there. So, I've been studying a lot about filters, and I'm doing this
 clone of max's z-plane in Pd.

 I hope anyone can help me guide where to find how to convert the values of
 the complex poles and zeros to biquad coefficients. I really needed that...

 Sorry if I missed it in Miller's book or some other obvious reference, I'm
 just really a newbie in filter design.

 Thanks
 Alex

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Re: [PD] Sum of delays...

2013-09-23 Thread Frank Barknecht
On Sun, Sep 22, 2013 at 12:09:53AM +0100, Ed Kelly wrote:
 
 
 if you can I would prefer to patch with direct connections as it may make
 things clearer. Attach is a little sketch (router.pd) which uses no
 signal-sends and -receives at all, so you can be sure to have no delays
 introduced. Still you can route all over - but of course feedback paths are 
 not
 possible.
 
 
 Oh yes they are.
 
 If you send the audio you want to feed back into a [delwrite~ feedbuf
 10] object, and then take the audio back into the feedback loop using
 a [delread~ feedbuf 0] object, you can bypass the problem with
 feedback loops (stack overflow) and can create audio feedback
 networks.

Yeah, but actually the goal here was to avoid introducing any delays and
that's only possible if you avoid feedback as well.


Ciao
-- 
Frank

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[PD] Cannot get [hid] to work properly with my mouse

2013-09-23 Thread s p
Hi!

I am trying to use [hid] on pd vanilla and Ubuntu.
Ideally, I would like to use the mouse as a fader on Y axis : when I move
the mouse, the fader moves accordingly, when the mouse doesn't move the
fader stays in the same position.

Problem is, I can get only relative Y, and relative Y seems to keep sending
the value (1 or -1) from the last move, even if you don't move at all. So
basically it is impossible to detect that the mouse is not moving.

Is there a workaround this issue?

Sebastien Piquemal
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Re: [PD] Gridflow and fonts on Raspberry Pi

2013-09-23 Thread Patrice Colet
 I've confused a bit the first trick, renaming a proc could be necessary for 
procedures coded from pd messages, not the ones loaded from a tcl files. Also, 
introcing tcl classes could help for not having duplicated proc names.

 It would be nice to know if sys_gui is ok on Raspberry Pi in the case I'd use 
it on some project :D.

[sys_gui] can replace a large bunch of external objects (zexy, toxy, cyclone, 
moocow, ...), but a bit slower, and sometimes would require the need to use 
[makefilename %c] for curved braces, but in most cases tcl's [list ...] can do 
it. The new text object allows to store easily tcl code inside a patch or 
datastructure, I've found this usefull for storing image data... Including it 
into pd-core would make it very efficient for application designing, there 
still would be the need for [get_dir] in file processing though.

Colet Patrice

- Mail original -
 De: Jack j...@rybn.org
 À: Patrice Colet colet.patr...@free.fr, pd-list@iem.at
 Envoyé: Lundi 23 Septembre 2013 11:03:16
 Objet: Re: [PD] Gridflow and fonts on Raspberry Pi
 
 Le 23/09/2013 02:27, Patrice Colet a écrit :
   I've collected some tricks since I'm using sys_gui, attached are
   the ones you might need to build and communicate with your
   interface through pd, if sys_gui is ok on raspberry, all the tcl
   and tk code is fully documented online...
 
  Tested on Pd 0.45.0
 
  Colet Patrice
 
  - Mail original -
  De: Colet Patrice colet.patr...@free.fr
  À: Jack j...@rybn.org, pd-list@iem.at
  Envoyé: Dimanche 22 Septembre 2013 21:29:24
  Objet: Re: [PD] Gridflow and fonts on Raspberry Pi
 
  Hello jack,
 
I don't know about raspberry, but it seems tcltk is used for te
GUI,
  so what about using [sys_gui] for generating the interface?
 
a toplevel -fullscreen should be able to do what you are looking
for,
  it's also possible to create fonts
 
  Le 22/09/2013 19:10, Jack a écrit :
  Hello,
 
  I found gridflow for Raspberry Pi here :
  http://artengine.ca/acastonguay/gridflow/
  And see a message from Claude here about Gridflow font :
  http://lists.puredata.info/pipermail/pd-list/2006-01/034431.html
 
  My questions :
  I would like to use Raspberry Pi and Pd to render text on a
  screen.
  I guess Gridflow could be the right library to use if it can
  manage
  fonts and if it is stable on RPi ?
  Is there an other library (or idea) for this purpose ? For
  example
  : a
  pd window in fullscreen with a canvas with text ? In this case,
  how
  to
  achieve that (fullscreen without menubar and window title bar
  with
  pd).
 
  I am on raspbian :
  PRETTY_NAME=Raspbian GNU/Linux 7 (wheezy)
  NAME=Raspbian GNU/Linux
  VERSION_ID=7
  VERSION=7 (wheezy)
  Linux raspberrypi 3.6.11+ #538 PREEMPT Fri Aug 30 20:42:08 BST
  2013
  armv6l GNU/Linux
  with Pd-0.45.2 () compiled 16:14:18 Sep 17 2013.
  Thanx for any help.
  ++
 
  Jack
 
 
 
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 Hello Patrice,
 
 Very nice ! Ijust test your patch with Pd-0.45.0 (test 2) on Ubuntu
 13.04 and it is working perfectly.
 Thanx a lot, I will test soon on Raspberry Pi.
 ++
 
 Jack
 
 
 

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[PD] openEXR in Gem

2013-09-23 Thread Patrice Colet

 Is it possible to read openEXR files with Gem?

Colet Patrice


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Re: [PD] Cannot get [hid] to work properly with my mouse

2013-09-23 Thread James Dunn

What about [change]?

Quoth s p, on 23/09/2013 11:12:

Hi!

I am trying to use [hid] on pd vanilla and Ubuntu.
Ideally, I would like to use the mouse as a fader on Y axis : when I 
move the mouse, the fader moves accordingly, when the mouse doesn't 
move the fader stays in the same position.


Problem is, I can get only relative Y, and relative Y seems to keep 
sending the value (1 or -1) from the last move, even if you don't move 
at all. So basically it is impossible to detect that the mouse is not 
moving.


Is there a workaround this issue?

Sebastien Piquemal


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Re: [PD] PLEASE HELP WITH EQ BUILDING

2013-09-23 Thread Mario Mey

Good thread about EQ: http://puredata.hurleur.com/sujet-1687.html



El 22/09/13 15:19, Luca Mani escribió:
Hello does anybody knows how to build a 3 bands eq with the following 
adjustable parameters: FREQUENCY, GAIN +- and Q?

Or has a couple of examples to show me please ?

Thanks



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Re: [PD] Cannot get [hid] to work properly with my mouse

2013-09-23 Thread s p
Yep, I tried that already, but that doesn't work if you move the mouse
slowly.


2013/9/23 James Dunn ja...@4thharmonic.com

  What about [change]?

 Quoth s p, on 23/09/2013 11:12:

   Hi!

  I am trying to use [hid] on pd vanilla and Ubuntu.
  Ideally, I would like to use the mouse as a fader on Y axis : when I
 move the mouse, the fader moves accordingly, when the mouse doesn't move
 the fader stays in the same position.

  Problem is, I can get only relative Y, and relative Y seems to keep
 sending the value (1 or -1) from the last move, even if you don't move at
 all. So basically it is impossible to detect that the mouse is not moving.

  Is there a workaround this issue?

  Sebastien Piquemal


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Re: [PD] Cannot get [hid] to work properly with my mouse

2013-09-23 Thread James Dunn
Yes I see what you mean. If you are on linux you could try [linuxevent] 
from here:


http://at.or.at/hans/pd/hid.html

I use this on Arch due to this bug:

http://sourceforge.net/p/pure-data/bugs/889/

[linuxevent] has finger detection so you can use this to gate the data 
stream.


Quoth s p, on 23/09/2013 12:29:
Yep, I tried that already, but that doesn't work if you move the mouse 
slowly.



2013/9/23 James Dunn ja...@4thharmonic.com 
mailto:ja...@4thharmonic.com


What about [change]?

Quoth s p, on 23/09/2013 11:12:

Hi!

I am trying to use [hid] on pd vanilla and Ubuntu.
Ideally, I would like to use the mouse as a fader on Y axis :
when I move the mouse, the fader moves accordingly, when the
mouse doesn't move the fader stays in the same position.

Problem is, I can get only relative Y, and relative Y seems to
keep sending the value (1 or -1) from the last move, even if you
don't move at all. So basically it is impossible to detect that
the mouse is not moving.

Is there a workaround this issue?

Sebastien Piquemal


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Re: [PD] openEXR in Gem

2013-09-23 Thread Py Fave
i think no
i don't know if gem can handle anything higher than 8 bits / pixel .
it seems like no .(especially pix_boxes)

but i'm perhaps wrong/outdated
if you see an alternative ,
let me know .





2013/9/23 Patrice Colet colet.patr...@free.fr:

  Is it possible to read openEXR files with Gem?

 Colet Patrice


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Re: [PD] Cannot get [hid] to work properly with my mouse

2013-09-23 Thread s p
The patch I am doing is for a workshop, so I'd like to be platform
independent...
But thanks for the tip anyways!


2013/9/23 James Dunn ja...@4thharmonic.com

  Yes I see what you mean. If you are on linux you could try [linuxevent]
 from here:

 http://at.or.at/hans/pd/hid.html

 I use this on Arch due to this bug:

 http://sourceforge.net/p/pure-data/bugs/889/

 [linuxevent] has finger detection so you can use this to gate the data
 stream.

 Quoth s p, on 23/09/2013 12:29:

 Yep, I tried that already, but that doesn't work if you move the mouse
 slowly.


 2013/9/23 James Dunn ja...@4thharmonic.com

  What about [change]?

 Quoth s p, on 23/09/2013 11:12:

Hi!

  I am trying to use [hid] on pd vanilla and Ubuntu.
  Ideally, I would like to use the mouse as a fader on Y axis : when I
 move the mouse, the fader moves accordingly, when the mouse doesn't move
 the fader stays in the same position.

  Problem is, I can get only relative Y, and relative Y seems to keep
 sending the value (1 or -1) from the last move, even if you don't move at
 all. So basically it is impossible to detect that the mouse is not moving.

  Is there a workaround this issue?

  Sebastien Piquemal


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Re: [PD] openEXR in Gem

2013-09-23 Thread Benjamin ~ 01xy
it seems to work with the sample images provided here
http://www.openexr.com/downloads.html
on linux debian GEM: ver: 0.93.git 374f713 compiled: May 19 2013 with
image loading support: magick SGI jpeg tiff

++b


Le 23/09/2013 14:10, Py Fave a écrit :
 i think no
 i don't know if gem can handle anything higher than 8 bits / pixel .
 it seems like no .(especially pix_boxes)

 but i'm perhaps wrong/outdated
 if you see an alternative ,
 let me know .





 2013/9/23 Patrice Colet colet.patr...@free.fr:
  Is it possible to read openEXR files with Gem?

 Colet Patrice


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Re: [PD] openEXR in Gem

2013-09-23 Thread IOhannes m zmoelnig
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA256

On 2013-09-23 14:41, Benjamin ~ 01xy wrote:
 it seems to work with the sample images provided here 
 http://www.openexr.com/downloads.html on linux debian GEM: ver:
 0.93.git 374f713 compiled: May 19 2013 with image loading support:
 magick SGI jpeg tiff


Gem will happily load whatever format is supported by ImageMagick if
you have the magick backend installed.
however, Gem only handles 8bits per channel for any pix, so the
additional resolution of the openEXR img will be lost.

fgmasd
IOhannes


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Re: [PD] [change] bug?

2013-09-23 Thread Alexandre Torres Porres
that's the way it works alright.

If your first value sent to it is zero, just initialize it with some other
value as the argument

cheers


2013/9/23 Mario Mey mario...@gmail.com

 If i create [change] and send it a [0(, it outputs nothing. It seems like
 it has already the 0 value initiated.

 I think [change] should not work like this...

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Re: [PD] PLEASE HELP WITH EQ BUILDING

2013-09-23 Thread Alexandre Torres Porres
lots of stuff in here https://github.com/dotmmb/mmb


2013/9/23 Mario Mey mario...@gmail.com

  Good thread about EQ: http://puredata.hurleur.com/sujet-1687.html



 El 22/09/13 15:19, Luca Mani escribió:

  Hello does anybody knows how to build a 3 bands eq with the following
 adjustable parameters: FREQUENCY, GAIN +- and Q?
 Or has a couple of examples to show me please ?

  Thanks



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Re: [PD] [change] bug?

2013-09-23 Thread IOhannes m zmoelnig
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA256

On 2013-09-23 17:45, Mario Mey wrote:
 If i create [change] and send it a [0(, it outputs nothing.

yes

 It seems like it has already the 0 value initiated.

yes.

 
 I think [change] should not work like this...
 

i disagree.

[change] *always* takes an argument, which is the initial value.
if you fail to provide one, it will default to '0'.
changing this behaviour might break patches, hence it is a no-go.

fgmadr
IOhannes

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Re: [PD] gendy~

2013-09-23 Thread Alexandre Torres Porres
awesome, definitely using this! :)


2013/9/8 Pagano, Patrick p...@digitalworlds.ufl.edu

  Thank YOU 
  --
 *From:* Matthias Kronlachner [m.kronlach...@gmail.com]
 *Sent:* Sunday, September 08, 2013 7:02 AM
 *To:* Pagano, Patrick
 *Cc:* pd-list
 *Subject:* Re: [PD] gendy~

   Hi!

 I guess you are referring to this repo of gendy~:
 https://github.com/ssfrr/gendyflext

 I built it for OSX, you can find it here:
 http://www.matthiaskronlachner.com/download/gendy~_osx_build.zip

 But, as it is done with flext, it would be a good exercise for the
 students to compile it on their own anyway.

 Matthias


 On 9/8/13 5:53 AM, Pagano, Patrick wrote:

 Hello

  Does anyone have a gendy~ object for Pure Data OSX or WIndows?

  I found Spencers code that i built for linux, but i am hoping someone
 made it for the other platforms
 Been doing some Iannis stuff and was hoping to show it to some students

  Patrick


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Re: [PD] [change] bug?

2013-09-23 Thread i go bananas
if you want a [change] that will always output its first value, regardless
of what it is, then you could set up a little thing like this attached patch


On Tue, Sep 24, 2013 at 1:19 AM, IOhannes m zmoelnig zmoel...@iem.atwrote:

 -BEGIN PGP SIGNED MESSAGE-
 Hash: SHA256

 On 2013-09-23 17:45, Mario Mey wrote:
  If i create [change] and send it a [0(, it outputs nothing.

 yes

  It seems like it has already the 0 value initiated.

 yes.

 
  I think [change] should not work like this...
 

 i disagree.

 [change] *always* takes an argument, which is the initial value.
 if you fail to provide one, it will default to '0'.
 changing this behaviour might break patches, hence it is a no-go.

 fgmadr
 IOhannes

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Re: [PD] openEXR in Gem

2013-09-23 Thread Patrice Colet
loading an exr image created with Blender failed with gem 0.93.git 374f713 and
image loading support: magick SGI jpeg tiff,
same image is loaded by cinelerra...

anyway I was interested about getting z-depth data, I didn't know if it was 
possible with pix objects

thank you


- Mail original -
 Envoyé: Lundi 23 Septembre 2013 14:41:10

 it seems to work with the sample images provided here
 http://www.openexr.com/downloads.html
 on linux debian GEM: ver: 0.93.git 374f713 compiled: May 19 2013 with
 image loading support: magick SGI jpeg tiff
 
 ++b
 
 
 Le 23/09/2013 14:10, Py Fave a écrit :
  i think no
  i don't know if gem can handle anything higher than 8 bits / pixel
  .
  it seems like no .(especially pix_boxes)
 
  but i'm perhaps wrong/outdated
  if you see an alternative ,
  let me know .
 
 
 
 
 
  2013/9/23 Patrice Colet colet.patr...@free.fr:
   Is it possible to read openEXR files with Gem?
 
  Colet Patrice
 
 
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[PD] [change] bug?

2013-09-23 Thread Mario Mey
If i create [change] and send it a [0(, it outputs nothing. It seems 
like it has already the 0 value initiated.


I think [change] should not work like this...

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Re: [PD] alsa and jack on ARM/Wandbaord

2013-09-23 Thread Chris Clepper
Looks like it is a driver issue in the kernel preventing duplex audio with
the onboard sgtl5000.  I'm about to rebuild the kernel to test.


On Mon, Sep 23, 2013 at 2:25 AM, IOhannes m zmölnig zmoel...@iem.at wrote:

 On 09/22/13 21:00, Chris Clepper wrote:
  I've got a Wandboard* here for some testing and I can't get Alsa to work
 in
  duplex.  Testing with arecord produces a soundfile and aplay plays it
 back.
   But starting Pd with Alsa or jack gives the dreaded errors about the
  resource being in use.

 i did some tests with the wandboard and an external USB soundcard, and i
 *never* managed to get jackd running stable for longer (the project
 required that audio would work for days and weeks without restart).
 so i ended up using a complicated (compared to jack) plugin system based
 on ALSA.
 it turned out that the timing on the wandboard is much too imprecise for
 jack (and the connected cheapo USB-soundcard did not help)

 obviously this is not the problem you are facing here (as i did get full
 duplex sound), but maybe this info is of some other use...

 fgmasdr
 IOhannes


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[PD] Insubscribe

2013-09-23 Thread Gabriele Cappellani


Inviato da iPhone

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Re: [PD] from poles/zeros to biquad coefficients - how to? (something like max's z-plane)

2013-09-23 Thread Funs Seelen
On Mon, Sep 23, 2013 at 5:35 PM, Alexandre Torres Porres
por...@gmail.comwrote:


 thanks, here's a pic of what I have so far


 https://fbcdn-sphotos-g-a.akamaihd.net/hphotos-ak-prn1/11212_10151872996046683_1825736206_n.jpg


Cool.




  For extra inspiration you could have a look at PoZeTools

 It sure does look like what I need. Thanks. But extracting what I need to
 know about the math of converting from coordinates to coefficients was just
 over my head :P unfortunately, sorry.

 I was hoping for something simpler, like just the operations needed. If
 the info is in code, I need it to more explicit. I'd really appreciate if
 anyone knows how to read from this and just points it out for me so I can
 put it in a patch.

 I'm assuming it's rather simple math


I remember I once learned how to do this but never repeated the practice.
If I find time to do that I would gladly try to figure it out again, but if
someone more experienced feels the urge to chime in before that time I
would be very happy too :).
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Re: [PD] from poles/zeros to biquad coefficients - how to? (something like max's z-plane)

2013-09-23 Thread Alexandre Torres Porres
 Great that you're doing this!

thanks, here's a pic of what I have so far

https://fbcdn-sphotos-g-a.akamaihd.net/hphotos-ak-prn1/11212_10151872996046683_1825736206_n.jpg

 For extra inspiration you could have a look at PoZeTools

It sure does look like what I need. Thanks. But extracting what I need to
know about the math of converting from coordinates to coefficients was just
over my head :P unfortunately, sorry.

I was hoping for something simpler, like just the operations needed. If the
info is in code, I need it to more explicit. I'd really appreciate if
anyone knows how to read from this and just points it out for me so I can
put it in a patch.

I'm assuming it's rather simple math

Cheers
Alex


2013/9/23 Funs Seelen funssee...@gmail.com

 Hi Alexandre,

 Great that you're doing this! For extra inspiration you could have a look
 at PoZeTools (http://kmt.hku.nl/~pieter/SOFT/RESP/html/PoZeTools.html).
 It's great software by Pieter Suurmond. He's the one who taught me filter
 design and he probably has some info about Z-transform on his website as
 well.

 Regards,
 --Funs


 On Mon, Sep 23, 2013 at 7:37 AM, Alexandre Torres Porres por...@gmail.com
  wrote:

 Hi there. So, I've been studying a lot about filters, and I'm doing this
 clone of max's z-plane in Pd.

 I hope anyone can help me guide where to find how to convert the values
 of the complex poles and zeros to biquad coefficients. I really needed
 that...

 Sorry if I missed it in Miller's book or some other obvious reference,
 I'm just really a newbie in filter design.

 Thanks
 Alex

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Re: [PD] Gridflow and fonts on Raspberry Pi

2013-09-23 Thread Jack
Le 23/09/2013 12:45, Patrice Colet a écrit :
  I've confused a bit the first trick, renaming a proc could be necessary for 
 procedures coded from pd messages, not the ones loaded from a tcl files. 
 Also, introcing tcl classes could help for not having duplicated proc names.

  It would be nice to know if sys_gui is ok on Raspberry Pi in the case I'd 
 use it on some project :D.
Good news ! ;)

All objects in hcs library compile on Raspberry Pi.
On Ubuntu, you need to replace line (in Makefile) :
PD_PATH = /usr
by
PD_PATH = /usr/local
then
$ make

Your example with RPi to write text in a fullscreen window via tcl (with
sys_gui object) works fine.
Thanx.
++

Jack



 [sys_gui] can replace a large bunch of external objects (zexy, toxy, cyclone, 
 moocow, ...), but a bit slower, and sometimes would require the need to use 
 [makefilename %c] for curved braces, but in most cases tcl's [list ...] can 
 do it. The new text object allows to store easily tcl code inside a patch or 
 datastructure, I've found this usefull for storing image data... Including it 
 into pd-core would make it very efficient for application designing, there 
 still would be the need for [get_dir] in file processing though.

 Colet Patrice

 - Mail original -
 De: Jack j...@rybn.org
 À: Patrice Colet colet.patr...@free.fr, pd-list@iem.at
 Envoyé: Lundi 23 Septembre 2013 11:03:16
 Objet: Re: [PD] Gridflow and fonts on Raspberry Pi

 Le 23/09/2013 02:27, Patrice Colet a écrit :
  I've collected some tricks since I'm using sys_gui, attached are
  the ones you might need to build and communicate with your
  interface through pd, if sys_gui is ok on raspberry, all the tcl
  and tk code is fully documented online...

 Tested on Pd 0.45.0

 Colet Patrice

 - Mail original -
 De: Colet Patrice colet.patr...@free.fr
 À: Jack j...@rybn.org, pd-list@iem.at
 Envoyé: Dimanche 22 Septembre 2013 21:29:24
 Objet: Re: [PD] Gridflow and fonts on Raspberry Pi

 Hello jack,

   I don't know about raspberry, but it seems tcltk is used for te
   GUI,
 so what about using [sys_gui] for generating the interface?

   a toplevel -fullscreen should be able to do what you are looking
   for,
 it's also possible to create fonts

 Le 22/09/2013 19:10, Jack a écrit :
 Hello,

 I found gridflow for Raspberry Pi here :
 http://artengine.ca/acastonguay/gridflow/
 And see a message from Claude here about Gridflow font :
 http://lists.puredata.info/pipermail/pd-list/2006-01/034431.html

 My questions :
 I would like to use Raspberry Pi and Pd to render text on a
 screen.
 I guess Gridflow could be the right library to use if it can
 manage
 fonts and if it is stable on RPi ?
 Is there an other library (or idea) for this purpose ? For
 example
 : a
 pd window in fullscreen with a canvas with text ? In this case,
 how
 to
 achieve that (fullscreen without menubar and window title bar
 with
 pd).

 I am on raspbian :
 PRETTY_NAME=Raspbian GNU/Linux 7 (wheezy)
 NAME=Raspbian GNU/Linux
 VERSION_ID=7
 VERSION=7 (wheezy)
 Linux raspberrypi 3.6.11+ #538 PREEMPT Fri Aug 30 20:42:08 BST
 2013
 armv6l GNU/Linux
 with Pd-0.45.2 () compiled 16:14:18 Sep 17 2013.
 Thanx for any help.
 ++

 Jack



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 Hello Patrice,

 Very nice ! Ijust test your patch with Pd-0.45.0 (test 2) on Ubuntu
 13.04 and it is working perfectly.
 Thanx a lot, I will test soon on Raspberry Pi.
 ++

 Jack



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Re: [PD] [change] bug?

2013-09-23 Thread Jonathan Wilkes





From: Alexandre Torres Porres por...@gmail.com
To: Mario Mey mario...@gmail.com 
Cc: pd-list pd-list@iem.at 
Sent: Monday, September 23, 2013 12:13 PM
Subject: Re: [PD] [change] bug?



that's the way it works alright.


Yes.  It's helpful to know that in Pure Data, an object that takes an optional 
float argument
typically sets the value to zero if the user doesn't provide an argument.

It's not a requirement: an external author can set the default value to 
anything they want.
It's just that doing that requires extra work (i.e., manually checking the 
arguments), whereas
defaulting to zero happens automatically.

Anyway, I think the OP might want [change] to default to NULL-- that is, let 
the next incoming
value pass no matter what because there isn't a previous value yet.  That could 
be handy.

You can make your own version of that by first sending a copy of the incoming 
value through a
spigot:

[spigot 1]
|
[* -1]
|
[set $1(
|
[change]

Then set the right inlet of [spigot] to zero and send the incoming value to 
your [change]
object, and it will be guaranteed to pass.

-Jonathan

If your first value sent to it is zero, just initialize it with some other 
value as the argument

cheers



2013/9/23 Mario Mey mario...@gmail.com

If i create [change] and send it a [0(, it outputs nothing. It seems like it 
has already the 0 value initiated.

I think [change] should not work like this...

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Re: [PD] [change] bug?

2013-09-23 Thread Mario Mey

Thanks for answering!

Who is the OP? Me? Well, if it is me... yes, I would like to have NULL 
as init value. But, I understand that [change] must work like it works 
right now. It's OK.


I use I go bananas patch to make it work (with [+ 1]). Then, I read 
Jonathan's reply... that has the same fix (with [* -1]).


Thanks everyone.





El 23/09/13 15:45, Jonathan Wilkes escribió:






From: Alexandre Torres Porres por...@gmail.com
To: Mario Mey mario...@gmail.com
Cc: pd-list pd-list@iem.at
Sent: Monday, September 23, 2013 12:13 PM
Subject: Re: [PD] [change] bug?




that's the way it works alright.


Yes.  It's helpful to know that in Pure Data, an object that takes an optional 
float argument
typically sets the value to zero if the user doesn't provide an argument.

It's not a requirement: an external author can set the default value to 
anything they want.
It's just that doing that requires extra work (i.e., manually checking the 
arguments), whereas
defaulting to zero happens automatically.

Anyway, I think the OP might want [change] to default to NULL-- that is, let 
the next incoming
value pass no matter what because there isn't a previous value yet.  That could 
be handy.

You can make your own version of that by first sending a copy of the incoming 
value through a
spigot:

[spigot 1]
|
[* -1]
|
[set $1(
|
[change]

Then set the right inlet of [spigot] to zero and send the incoming value to 
your [change]
object, and it will be guaranteed to pass.

-Jonathan


If your first value sent to it is zero, just initialize it with some other 
value as the argument
cheers




2013/9/23 Mario Mey mario...@gmail.com
If i create [change] and send it a [0(, it outputs nothing. It seems like it 
has already the 0 value initiated.

I think [change] should not work like this...

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Re: [PD] [change] bug?

2013-09-23 Thread yvan volochine

On 23/09/13 20:45, Jonathan Wilkes wrote:

You can make your own version of that by first sending a copy of the incoming 
value through a
spigot:

[spigot 1]
|
[* -1]
|
[set $1(
|
[change]

Then set the right inlet of [spigot] to zero and send the incoming value to 
your [change]
object, and it will be guaranteed to pass.


and if the incoming value is 0? =)

y

--
http://yvanvolochine.com
http://soundcloud.com/yvanvolochine
http://soundcloud.com/elgusanorojo
http://vimeo.com/yv

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Re: [PD] [change] bug?

2013-09-23 Thread Mario Mey

El 23/09/13 21:22, yvan volochine escribió:

On 23/09/13 20:45, Jonathan Wilkes wrote:
You can make your own version of that by first sending a copy of the 
incoming value through a

spigot:

[spigot 1]
|
[* -1]
|
[set $1(
|
[change]

Then set the right inlet of [spigot] to zero and send the incoming 
value to your [change]

object, and it will be guaranteed to pass.


and if the incoming value is 0? =)



Obviously: -0


y




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[PD] OT - New Orleans, installation opening Oct 11th

2013-09-23 Thread Thomas Grill
Hi all,
i'm in New Orleans, preparing my composed sound environment world
construction, variation: empty vessel to be opened at the May Space on
October 11th. Needless to say that the 200 loudspeakers involved will be
driven using Pure Data.
- http://themayspace.com/exhibition/october-2013-thomas-grill/

I'd be happy to meet people interested in sonic arts, electro-instrumental
improvisation etc. while i'm here. I'm also thankful for hints to related
events.

There will be two lectures at Loyola University that should be open for the
public (as long as space permits):
Oct 1, 11am - Talk about my scientific research: Characterization and
organization of recorded sounds. Room 423 of the Loyola
Communications/Music Complex.
Oct 2, 12:30pm - Talk about my artistic work, focusing on the
composition/installation series world construction. Room tbc.

Get in touch! See you!
Thomas

-- 
Thomas Grill
http://g.org
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Re: [PD] [change] bug?

2013-09-23 Thread Jonathan Wilkes

On 09/23/2013 07:55 PM, Mario Mey wrote:

Thanks for answering!

Who is the OP?


The Original Poster. :)

-Jonathan

Me? Well, if it is me... yes, I would like to have NULL as init value. 
But, I understand that [change] must work like it works right now. 
It's OK.


I use I go bananas patch to make it work (with [+ 1]). Then, I read 
Jonathan's reply... that has the same fix (with [* -1]).


Thanks everyone.





El 23/09/13 15:45, Jonathan Wilkes escribió:






From: Alexandre Torres Porres por...@gmail.com
To: Mario Mey mario...@gmail.com
Cc: pd-list pd-list@iem.at
Sent: Monday, September 23, 2013 12:13 PM
Subject: Re: [PD] [change] bug?




that's the way it works alright.


Yes.  It's helpful to know that in Pure Data, an object that takes an 
optional float argument
typically sets the value to zero if the user doesn't provide an 
argument.


It's not a requirement: an external author can set the default value 
to anything they want.
It's just that doing that requires extra work (i.e., manually 
checking the arguments), whereas

defaulting to zero happens automatically.

Anyway, I think the OP might want [change] to default to NULL-- that 
is, let the next incoming
value pass no matter what because there isn't a previous value yet.  
That could be handy.


You can make your own version of that by first sending a copy of the 
incoming value through a

spigot:

[spigot 1]
|
[* -1]
|
[set $1(
|
[change]

Then set the right inlet of [spigot] to zero and send the incoming 
value to your [change]

object, and it will be guaranteed to pass.

-Jonathan

If your first value sent to it is zero, just initialize it with some 
other value as the argument

cheers




2013/9/23 Mario Mey mario...@gmail.com
If i create [change] and send it a [0(, it outputs nothing. It 
seems like it has already the 0 value initiated.


I think [change] should not work like this...

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Re: [PD] [change] bug?

2013-09-23 Thread Jonathan Wilkes

On 09/23/2013 08:22 PM, yvan volochine wrote:

On 23/09/13 20:45, Jonathan Wilkes wrote:
You can make your own version of that by first sending a copy of the 
incoming value through a

spigot:

[spigot 1]
|
[* -1]
|
[set $1(
|
[change]

Then set the right inlet of [spigot] to zero and send the incoming 
value to your [change]

object, and it will be guaranteed to pass.


and if the incoming value is 0? =)


Oh yeah.  So [+ 1]

-Jonathan



y




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Re: [PD] alsa and jack on ARM/Wandbaord

2013-09-23 Thread Chris Clepper
Yup, that was it.  I had to get some Freescale guys to fix some kernel code
and the fixes should filter out into the various branches and repos over
time.  I think I'm one of two people that have functioning audio on the
iMX6 platform right now.  It's like having a stack of Pi's in terms of
processing (no video acceleration though).


On Mon, Sep 23, 2013 at 12:50 PM, Chris Clepper cgclep...@gmail.com wrote:

 Looks like it is a driver issue in the kernel preventing duplex audio with
 the onboard sgtl5000.  I'm about to rebuild the kernel to test.


 On Mon, Sep 23, 2013 at 2:25 AM, IOhannes m zmölnig zmoel...@iem.atwrote:

 On 09/22/13 21:00, Chris Clepper wrote:
  I've got a Wandboard* here for some testing and I can't get Alsa to
 work in
  duplex.  Testing with arecord produces a soundfile and aplay plays it
 back.
   But starting Pd with Alsa or jack gives the dreaded errors about the
  resource being in use.

 i did some tests with the wandboard and an external USB soundcard, and i
 *never* managed to get jackd running stable for longer (the project
 required that audio would work for days and weeks without restart).
 so i ended up using a complicated (compared to jack) plugin system based
 on ALSA.
 it turned out that the timing on the wandboard is much too imprecise for
 jack (and the connected cheapo USB-soundcard did not help)

 obviously this is not the problem you are facing here (as i did get full
 duplex sound), but maybe this info is of some other use...

 fgmasdr
 IOhannes


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Re: [PD] from poles/zeros to biquad coefficients - how to? (something like max's z-plane)

2013-09-23 Thread Alexandre Torres Porres
for what i see, it's not some sort of straight formula, right? seems a bit
more complicated than that.

cheers


2013/9/23 Funs Seelen funssee...@gmail.com

 On Mon, Sep 23, 2013 at 5:35 PM, Alexandre Torres Porres por...@gmail.com
  wrote:


 thanks, here's a pic of what I have so far


 https://fbcdn-sphotos-g-a.akamaihd.net/hphotos-ak-prn1/11212_10151872996046683_1825736206_n.jpg


 Cool.



  For extra inspiration you could have a look at PoZeTools

 It sure does look like what I need. Thanks. But extracting what I need to
 know about the math of converting from coordinates to coefficients was just
 over my head :P unfortunately, sorry.

 I was hoping for something simpler, like just the operations needed. If
 the info is in code, I need it to more explicit. I'd really appreciate if
 anyone knows how to read from this and just points it out for me so I can
 put it in a patch.

 I'm assuming it's rather simple math


 I remember I once learned how to do this but never repeated the practice.
 If I find time to do that I would gladly try to figure it out again, but if
 someone more experienced feels the urge to chime in before that time I
 would be very happy too :).

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Re: [PD] Cannot get [hid] to work properly with my mouse

2013-09-23 Thread Simon Wise

On 23/09/13 20:10, s p wrote:

The patch I am doing is for a workshop, so I'd like to be platform
independent...
But thanks for the tip anyways!


platform independent plus using input is going to be quite limited, since under 
the surface there will be quite different implementations per platform in any 
cross platform object or environment ... which may or may not be consistent.


Of course with simpler and more abstracted data you may have more luck.


Simon

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