Re: [PD] RPi audio tips tweaks
If you need to that through X forwarded over ssh its gonna be ugly but there are some steps you can take to ease the load. One I discovered was changing the cipher to blowfish with the -c flag Maybe it doesnt even have to be ssh, how about forwarding X over a really insecure old telnet connection if its just for local work? a. On 25 January 2013 at 16:45 Julian Brooks jbee...@gmail.com wrote: Hi all, Back to messing with my RPi after the slew of positive news recently. Unfortunately I'm not really hearing/seeing such good results myself. Certainly not getting anything like Miller and Pierre's 10ms full duplex from within Pd. In fact it's still really glitchy/unstable verging on the unusable. I'm presuming that people are getting such decent results by running Pd headless (no gui). Because of the patches I'm wanting to run I do need to have the gui so am wondering if anyone has some tips to squeeze a little more out the pi? Have updated Raspbian to most recent, done the usb tweak to 1.1, removed pulseaudio. I'm running the pi via ssh through my laptop. I'm also running vncserver on the pi and xvncviewer on my debian lappy. Also have an imic, so don't need anything other than usb-audio. So things like: is it worth disabling some of the audio and midi modules, that kind of stuff, well you know, anything really? Many thanks in advance, Julian ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] Pd launched via rc.local can't search path
On 24 January 2013 at 18:35 Pierre Massat pimas...@gmail.com wrote: Hi, I'm trying to get Pd to run at startup. I've put the command in /etc/rc.local. Everything works fine, except that Pd seems to be unable to search the paths I specified (either in .pdsettings or directly in the command line). I'm trying to use a patch with the reverb described in the audio examples (G.08 I think), and there's an abstraction in it which lives in 3.audio.examples. Every time I boot Pd starts all right, but I get errors because it can't create the abstraction. It's a bit weird because the very same command works like a charm once i've logged in. Make sure all paths are absolute, and not relative to a tilde (user home) and point to world readable directories. Starting via rc.local will mean the application is launched as root, and since there is no login shell and cwd associated at the time it is launched the paths you specify when logged in probably make no sense.___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] Pd launched via rc.local can't search path
rc.local is the last thing in the init.d stage, so no. What kind of logging do you have. Had a look in syslog? Or put the pd launch in backticks and try to catch its stdout for ssome clues andy On 24 January 2013 at 19:52 Pierre Massat pimas...@gmail.com wrote: Hi, all of my paths are absolute. There are in /usr/bin/puredata. Do you think it could be that /usr/ isn't mounted yet when Pd is launched by rc.local? ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] Audio output on Raspberry Pi - Recommendations?
Yes, I got it goiing for a recent workshop in Nantes ALSA tweaked a bit with the .asoundrc file Hardware: Turtle Beach dongle (Old Amigo 1 I think) Latency: 150ms (total suckage) On 18 January 2013 at 10:49 Julian Brooks jbee...@gmail.com wrote: Apologies for dragging this up again... Can anyone confirm that they have got duplex audio working - in any form with any combination of hdmi, usb or the regular audio out of the rpi, and with which OS, version, tweaks? Still not convinced it's properly doable from our (iMic USB based) experiments. Regards, Julian On 5 January 2013 17:54, Dirk Myers di...@wildvine.com mailto:di...@wildvine.com wrote: Thanks, all. I'll check out the iMic UCA222. Cheers! -- Dirk On Jan 4, 2013, at 12:47 PM, Julian Brooks wrote: +1 on the imic. On 4 January 2013 18:18, Cyrille Henry c...@chnry.net mailto:c...@chnry.net wrote: in fact, both edirol UA1X and beringer uca222 works. they look so similar that I mix there name. sorry Cyrille Le 04/01/2013 18:55, Pedro Lopes a écrit : edirol? Isn't uca222 a behringer card? On Fri, Jan 4, 2013 at 6:48 PM, Cyrille Henry c...@chnry.net mailto:c...@chnry.net mailto: c...@chnry.net mailto:c...@chnry.net wrote: edirol uca222 works great. cheers c Le 04/01/2013 17:49, Miller Puckette a écrit : The best ide I got was from the Griffin iMic (thanks to Joe Deken over at New Blankets for running out and buying a bunch of cheap USB 'adapters' - the Griffin is $40 list / $27 street). The thing looks like an apple product but (as I discovered today looking at it) isn't. Good job of apple-style-imitation-without- __infringing-trademark. The other USB 'adapters' also worked but beware - some take more power than the Pi can supply and some are physically so bulky you can't get anything in the other USB slot - in either case you have to get a powered USB hub and live with a layer of additional uncertainty. cheers Miller On Fri, Jan 04, 2013 at 08:18:00AM -0800, Dirk Myers wrote: Folks: I've been digging through the list searching, haven't found a clear answer: what are folks using for audio output from the Raspberry Pi to a mixing board? I'm leaning toward trying a few USB audio interfaces. Curious about what others have used that is working well. Thanks, Dirk __ ___ Pd-list@iem.at mailto:Pd-list@iem.at mailto: Pd-list@iem.at mailto:Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/__listinfo/pd-list http://lists.puredata.info/__listinfo/pd-list http://lists.puredata.info/listinfo/pd-list http://lists.puredata.info/listinfo/pd-list __ ___ Pd-list@iem.at mailto:Pd-list@iem.at mailto: Pd-list@iem.at mailto:Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/__listinfo/pd-list http://lists.puredata.info/__listinfo/pd-list http://lists.puredata.info/listinfo/pd-list http://lists.puredata.info/listinfo/pd-list __ ___ Pd-list@iem.at mailto:Pd-list@iem.at mailto: Pd-list@iem.at mailto:Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/__listinfo/pd-list http://lists.puredata.info/__listinfo/pd-list http://lists.puredata.info/listinfo/pd-list http://lists.puredata.info/listinfo/pd-list -- Pedro Lopes (HCI Researcher / PhD) contact: pedro.lo...@hpi.uni-postdam.de mailto:pedro.lo...@hpi.uni-postdam.de mailto: pedro.lo...@hpi.uni-postdam.de mailto:pedro.lo...@hpi.uni-postdam.de website: http://web.ist.utl.pt/pedro.lopes http://web.ist.utl.pt/pedro.lopes http://web.ist.utl.pt/pedro.lopes/ http://web.ist.utl.pt/pedro.lopes/ /
Re: [PD] Piezo, trigger, Arduino
Ever tried the kind of high voltage piezo you get in cigarette lighters? MaybeY you can drop that across some high value resistors to get an input suitable for an opamp stage. You would need to remove the spring loaded housing. They would be highly robust and able to take a beating from a drummer more directly. a. On 23 June 2011 at 10:43 richard duckworth richduckwo...@yahoo.com wrote: Piezo elements (the round, gold-coloured bell-buzzer type) make excellent triggers. Drumpads like the Roland SPD-n type use these as the triggers. Modifications need to be done to create a reliable trigger. The mechanical integrity of these devices can be a problem: the leads can literally 'fall off'. I 'pot' mine in a layer of epoxy so that the leads are literally glued to the surface. The element can be glued to a rubber pad (this is essentially what Roland does) and mounted on a wooden block to create a trigger pad. Roland uses a small coil in series with the piezo: this is there to provide transient suppression as the instantaneous signal peaks can be quite high (albeit fleeting). This coil is a good idea as it protects the circuitry on the first buffer the piezo sees. Other Piezo tips (mainly for audio): 1) If soldering new leads use a very low wattage iron, low temperature solder and complete the solder joint *quickly* 2) buy in bulk as a few will get destroyed as you perfect your method 3) if using for audio (i.e., as an audio pickup), then the piezo must be screened. A 'balanced signal' architecture works well here: piezo elements are wired 'signal hot' and 'signal cold', and the hum/RFI suppression is handled by a separate screen. 4) The MEAS film-type of piezo work much better for audio than the bell-buzzer type: http://www.meas-spec.com/product/t_product.aspx?id=2478 5) Impedance, impedance, impedance! Impedance is the rock upon which many piezo hackers perish. These elements need to be presented with an input impedance of many megaOhms. The average line input / mic input is totally inappropriate for these units. I use a simple FET buffer with an input impedance of 10 megaOhms on my piezos. Certain electronic DI boxes will also work well due to their high impedance characteristics, e.g., BSS. If piezos see a low-to-medium impedance, drastic LF rolloffs occur. This is why the cheap guitar contact mics sound so tinny when plugged directly into an amp. Rich Duckworth Lecturer in Music Technology Department of Music House 5 Trinity College Dublin 2 Ireland Tel 353 1 896 1500 It's the most devastating moment in a young mans life, when he quite reasonably says to himself, I shall never play The Dane! --- On Thu, 23/6/11, pd-list-requ...@iem.at pd-list-requ...@iem.at wrote: From: pd-list-requ...@iem.at pd-list-requ...@iem.at Subject: Pd-list Digest, Vol 75, Issue 88 To: pd-list@iem.at Date: Thursday, 23 June, 2011, 6:42 Send Pd-list mailing list submissions to pd-list@iem.at To subscribe or unsubscribe via the World Wide Web, visit http://lists.puredata.info/listinfo/pd-list or, via email, send a message with subject or body 'help' to pd-list-requ...@iem.at You can reach the person managing the list at pd-list-ow...@iem.at When replying, please edit your Subject line so it is more specific than Re: Contents of Pd-list digest... Today's Topics: 1. Re: control lot of audios files with arduino + puredata (FernandoG) 2. Re: Pd performance at TED (Tyler Leavitt) 3. Re: Pd performance at TED (Jonathan Wilkes) -- Message: 1 Date: Wed, 22 Jun 2011 21:13:45 -0400 From: FernandoG dataf...@gmail.com Subject: Re: [PD] control lot of audios files with arduino + puredata To: Hans-Christoph Steiner h...@at.or.at Cc: pd-list@iem.at, Martin Peach martin.pe...@sympatico.ca Message-ID: banlktink3dolaxthfsyafuxvmvxfu+e...@mail.gmail.com Content-Type: text/plain; charset=iso-8859-1 Hi guys I was researching about arduino mega and pd firmata and i found a post where they say that its not posible to use all digital output and analog inputs of arduino mega. http://arduino.cc/forum/index.php?topic=62256.0 I gona buy arduino mega this week, but i need all inputs-output working for my proyect. Do you know something about this incompatibility?? thanks 2011/6/3 FernandoG dataf...@gmail.com Thanks guys, first i will try the easy way, arduino mega. best! 2011/6/3 Hans-Christoph Steiner h...@at.or.at I think people have done some shift register+firmata things, but nothing got integrated into StandardFirmata/ Here's an example: http://www.makingthingsmove.org/blog/ .hc On Jun 2, 2011, at 1:02 AM, Martin Peach wrote: It's certainly possible to make a Pd patch that controls shift registers through firmata. It's also possible to program the Arduino to do that and send the switch
Re: [PD] tabread~ demo in WebPd
Those of you who were mulling over another stab at GSOC, or some other sponsored code campaign, surely the work Chris has started here is a perfect candidate to pick up and run with? On 14 June 2010 at 09:54 chrism ch...@mccormick.cx wrote: On Fri, 11 Jun 2010 08:51:15 -0400, Ichabod icha...@gmail.com wrote: On Sat, May 29, 2010 at 12:18 PM, chrism ch...@mccormick.cx wrote: Here's a new small demo of [tabread~] and some other dsp objects working in the browser: http://mccormick.cx/dev/webpd/demos/xmen-sample-looper/index.html Here's a video (seems to play ok in Firefox): http://mccormick.cx/webpd-tabread~.ogvhttp://mccormick.cx/webpd-tabread%7E.ogv I'm really excited about the future of this project. Don't get too excited as I am sort of running out of steam now. I am overwhelmed by contract work and other projects right now. Recently I got the [pack] [unpack] [*] and [+] objects working and it made me realise what a huge task this is to do on my own, especially when I began to consider integrating the schedule-aware objects like [vline~] [delay] etc. Oh well, just another project started and [possibly] never finished. :) It really makes me realise the enormous amount of effort and hours that Miller must have put into Pd over the years. I guess it goes without saying that anyone who uses Pd should be thankful for the amount of work he has released completely free of charge and with no obligations outside the BSD license, especially those benefiting commercially from what he's done. If anyone is interested in picking up and continuing my work on WebPd, you can have at the source code and the test patches/examples here: http://mccormick.cx/dev/webpd/ http://mccormick.cx/dev/webpd/tests Go nuts. I will continue to maintain and merge any useful patches back into my codebase. Also, this is probably elementary, but is it possible to highlight an array like this in regular Pd? You could do something similar, but maybe not exactly the same, by overlaying a datastructure on top of an array. Check out the Pd documentation for more information. Cheers, Chris. --- http://mccormick.cx ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] random, but always start with X
Random events (as we understand them here) are completely unrelated to one another. So the answer is to pre-load your system with 1, and have all the other values be random. [random 5] | [t b f] X [f 1] will always start with 1, and then give you random numbers. BUT: It might also give you, 1, 1, 1, 1 I suspect what you really want is to replace the random with an urn. a. On 13 June 2010 at 20:53 Ben Carney bfcar...@gmail.com wrote: Im trying to set up a simple system where, each time a metro is triggered on, 5 sound files are played, but they always start with sound file 1. It has been a while since i have used pd regularly and it seems I once knew the answer to this. can any one shed any light? best, -- benfcarney www.benfcarney.com Chicago, IL___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
