Pd-list March 2008

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150 participants
274 discussions

[PD-announce] codelab.fr, forum francophone pour pure-data
by emoc * 18 Mar '08

18 Mar '08

(désolé pour les envois multiples) Codelab.fr est un nouveau forum francophone consacré à la création d'images, de vidéo, de son et de musique par le code (pure-data / gem, processing, chuck, supercollider, livecode, vvvv, etc.) ou l'expérimentation électronique (construction d'interfaces et d'instruments, circuit-bending, etc.) Les logiciels et langages abordés sur le forum sont open-source (sauf vvvv, gratuit pour usage non commercial). C'est un espace de partage d'idées, d'entraide pour les utilisateurs de ces outils, un point d'entrée pour les débutants qui pourront y trouver des conseils pour démarrer. Un forum annonces est également disponible pour présenter les manifestations, workshops, concerts, associations, etc. qui donnent une place à ces pratiques. For english readers (sorry for cross posting) : Codelab.fr is a new french speaking forum devoted to the experimental practices for creation of pictures, videos, sound and music by code (processing, chuck, supercollider, livecode, pure-data, gem, vvvv, etc) or electronic experimentation (interfaces and instruments, circuit-bending, etc.) The software and languages approached on the forum are open-source (except for vvvv which is free for a not-commercial use). It is a crossroads where users could meet and help themselves. Beginners are welcome, and will be able to find some advices and help to start creative code programming. A forum is also available to announce demonstrations, workshops, concerts, associations, etc for these practices. http://codelab.fr _______________________________________________ PD-announce mailing list PD-announce(a)iem.at http://lists.puredata.info/listinfo/pd-announce

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Fwd: Alternate Controllers
by Mike McGonagle 18 Mar '08

18 Mar '08

---------- Forwarded message ---------- From: Mike McGonagle <mjmogo(a)gmail.com> Date: Mon, Mar 17, 2008 at 9:29 PM Subject: Re: [PD] Alternate Controllers To: Martin Eckart <imartron(a)gmail.com> Well, the stuff I would like to do with it would not be using MIDI. I have a program that I would like to control via some continuous controller, it is a granular synthesis program, and each parameter has 6 limits from which the actual parameter is derived. So, basically, I would like to not only be able to produce some continuous data, but also be able to easily select which parameter I will be controlling at any given time. I was looking at the Wii, and thought that it might be something useful. I saw R Boulange (sp?) perform with a Radio Baton in the 90's, and was very interested in that, except that they went for somewhere around 4000$... So, I am still looking... Thanks, Mike On Mon, Mar 17, 2008 at 9:16 PM, Martin Eckart <imartron(a)gmail.com> wrote: > I used Dance Dance Revolution mats through PD to ableton to drive midi > drums. It's pretty fun to jump around and make noise (usually too > much ;). > > It depends on what you're looking for, USB joysticks/controllers are > fairly easy to map/remap to midi with PD. > > -martin > On Mon, 2008-03-17 at 17:43 -0500, Mike McGonagle wrote: > > Hello all, > > > > > > Over the past few weeks, I have been looking at building a controller > > for myself, but was curious what other sorts of things others are > > doing with alternate controllers. What controllers are you using? How > > are you using them to control your programs? Has anyone considered > > putting together an "Alternate Controllers for PD" page? > > > > > > I am just curious if I should build my own, or just use an existing > > controller... > > > > > > (Also, Hans, the other day you posted about a new controller you have, > > but I can't find the email... What was that device?) > > > > > > Thanks, > > > > > > Mike > > > > > > -- > > Peace may sound simple—one beautiful word— but it requires everything > > we have, every quality, every strength, every dream, every high ideal. > > —Yehudi Menuhin (1916–1999), musician > > _______________________________________________ > > PD-list(a)iem.at mailing list > > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list > > -- Peace may sound simple—one beautiful word— but it requires everything we have, every quality, every strength, every dream, every high ideal. —Yehudi Menuhin (1916–1999), musician -- Peace may sound simple—one beautiful word— but it requires everything we have, every quality, every strength, every dream, every high ideal. —Yehudi Menuhin (1916–1999), musician

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Re: [PD] pd-ext paths, libs and help
by marius schebella 18 Mar '08

18 Mar '08

hallo georg, the problem is, that you have to remember in which library an object is, no help patch uses import or declare, and at least for me they are not working. I would like to use every object without having to add the prefix. let's say I want to use OSCroute... I put an object [import oscx]. but OSCroute ... couldn't create only oscx/OSCroute works, and then I can also use OSCroute. I can import OSCroute, but only after I imported oscx. almost all the help patches that rely on one of these libraries are broken. for me it looks like I have to import every single object in pdxt before I can use it, that's really not a solution. what I want is, that when I type OSCroute, the library is loaded. and there should be a default loaded that gets loaded if there are nameclashes between different libs. for nameclashes it makes sense to use the declare or prefix, but for the rest it is rather annoying. marius. Georg Holzmann wrote: > Hallo! > >> there are a lot of objects in pdxt that will not load by default, >> because the libraries are not loaded in the beginning and there is no >> path. I thought the idea of pdxt is that all objects are loadable. I > > Again: why should all obects load at the beginning ? I can't remember > that this was the idea of pdxt. > In my opinion this makes no sense at all - instead we should focus on or > document how its possible to load libs (declare/import), then also > patches are much more clear ... > > LG > Georg >

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[PD-announce] inside the wave
by marius schebella 17 Mar '08

17 Mar '08

hi, I did some Pd programming for an exhibition in the San Diego Museum of Art. http://www.sdmart.org/exhibition-future.html#inside-the-wave. I worked with Nina Waisman from the "particle group" and the sound installation is part of a bigger concept about nanotechnology. It is based on work we did last year for Berlin and will be up until June 22. more information at nina's site http://www.ninawaisman.net including a demo video http://www.ninawaisman.net/nano/nanoEmbed.html. marius. _______________________________________________ PD-announce mailing list PD-announce(a)iem.at http://lists.puredata.info/listinfo/pd-announce

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Re: [PD] conflict between PD and tascam us-122
by Hans Roels 17 Mar '08

17 Mar '08

You can change the blocksize in the menu File > startup > startup flags(in windows; in Mac it's under preferences if I remember well). Type something like -audiobuf 20 -blocksize 256 Then press 'save settings' and close and restart PD. 20 is the latency or audio buffer and 256 is the blocksize. Try out 64, 128 or 256 as blocksize and try out different values for the audio buffer (depending on your audiocard and computer) best hans r At 14:06 17/03/2008, you wrote: >Hi, >first of all thanks. >i know how to change the latency in PD and Tascam. but i can't find >the blocksize. >where is it? >i found this http://crca.ucsd.edu/~msp/Pd_documentation/x3.htm >but i can't find how to change it >sorry about this. > >best >s > > >On 17 Mar 2008, at 09:52, Hans Roels wrote: > >>Hello, >>I had a problem with the Tascam us-122L and I solved it by changing >>the blocksize and the latency. I wrote this in the startup settings: >>-audiobuf 20 -blocksize 256 >> >>I am using several of these cards in a school and they work more or >>less (with apple os 10.3.9) but I have to start the computer >>without the audio card attached ! (and even then the midi in >>sometimes suddenly stops). PD and Audacity work well but using the >>tascam as the standard audio card (for example to play a cd on >>these computers) never works... >> >>Hans r >> >>At 20:51 16/03/2008, Stefano Tedesco wrote: >>>Hi, >>>I'm having problem between PD and the audio interface Tascam us-122. >>>There is some kind of conflict. It works fine without the audio >>>interface but when I plug the interface, the sounds comes out like >>>some kind of buffering...don't know what...just on and off, instead >>>without it it works fine. I've tried to set the latency as I've been >>>told but nothing...still have problems. >>> >>>Anyone had the same problem and how did he fix it? or suggestions? >>> >>>Thank you very much >>>Stefano >>> >>>_______________________________________________ >>>PD-list(a)iem.at mailing list >>>UNSUBSCRIBE and account-management -> http://lists.puredata.info/ >>>listinfo/pd-list >>

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[PD-announce] pd 0.41-4 (bug fix) release
by Miller Puckette 17 Mar '08

17 Mar '08

I fixed some more bugs... latest is 0.41-4 on the usual: The most serious recent bugs were causing occasional crashes starting and stopping DSP on huge patches, and some audio devices weren't showing up on the dialogs on windows machines. http://crca.ucsd.edu/~msp/software.htm cheers Miller _______________________________________________ PD-announce mailing list PD-announce(a)iem.at http://lists.puredata.info/listinfo/pd-announce

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NRCI - Networked Resources for Collaborative Improvisation
by Greg Surges 17 Mar '08

17 Mar '08

Hey all, Just wanted to post a link to a project I've been co-developing for a while now. NRCI is a set of PD abstractions to allow for sharing control data over a standard TCP/IP network. It's been designed for MiLO, the Milwaukee Laptop Orchestra. Thought people might be interested, and I'm anxious for any suggestions or comments! Here's the link <http://ccrma.stanford.edu/%7Ecburns/NRCI/>. Thanks! -Greg Surges -- http://www.uwm.edu/~gssurges/ <http://www.uwm.edu/%7Egssurges/>

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Box Muller Gaussian noise
by Andy Farnell 17 Mar '08

17 Mar '08

Could a stats mathematician please help me check this. (attached) I'm following the Box Muller formula for getting a cheap Gaussian distribution (instead of adding up 12 sources a la central limit method). http://www.dspguru.com/howto/tech/wgn.htm Does this look right? Also, I have no idea how to check the distribution. It sounds the same as uniform noise and looks the same in the spectrograph? What gives? Do I need to average over a very long time or something to see any difference? Cheers all, Andy -- Use the source

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FWIW: Box Muller Gaussian noise
by Atwood, Robert C 17 Mar '08

17 Mar '08

FWIW here's a C subroutine with a little 'main' routine for testing, I did a few years ago for the Box Muller method, pretty much directly based upon what I read in Numerical Recipes. The text of the section in Num.Recip. Is a very clear explanation of it , I find , your mileage may vary! 1 #include <math.h> 2 #include <stdio.h> 3 #include "machine.h" <---- just neds to choose datatype CA_FLOAT as double or float or other real-type value <----- and define LOG accordingly... Can be gotten rid of with some small edits. 4 5 /* 6 BOX-MULLER routine for returning a random number normally distributed 7 about a mean of zero, with a standard deviation of 1. Adapted from Numerical Recipes in C by Press and Flannery. 8 */ 9 10 CA_FLOAT box_muller () 11 { 12 static int flag = 0; 13 static CA_FLOAT gset = 0; 14 CA_FLOAT v1, v2, fac, gdev, r; 15 16 if (!flag) { 17 do { 18 v1 = 2 * drand48 () - 1; 19 v2 = 2 * drand48 () - 1; 20 r = v1 * v1 + v2 * v2; 21 } while (r >= 1 || r == 0); 22 fac = sqrt ((-2 * LOG (r) / r)); 23 gset = v1 * fac; 24 gdev = v2 * fac; 25 flag = 1; 26 } else { 27 gdev = gset; 28 flag = 0; 29 } 30 return (gdev); 31 } /* end of box_muller */ 32 33 /* return gaussian devates for a given mean and standard deviation */ 34 /* by calling the box_muller routine. */ 35 36 CA_FLOAT gaussdev (CA_FLOAT * params) 37 { 38 CA_FLOAT stdev; 39 CA_FLOAT mean; 40 41 if (params == NULL || (params + 1) == NULL) { 42 fprintf (stderr, "ERROR: gaussdev: You messed up, NULL pointer here.\n"); 43 exit (1); 44 } 45 46 mean = params[0]; 47 stdev = params[1]; 48 return ((stdev * box_muller ()) + mean); 49 } 50 51 #ifdef TEST_BOX_MULLER 52 void main () 53 { 54 int i; 55 CA_FLOAT stdev = 2; 56 CA_FLOAT mean = 10; 57 CA_FLOAT params[2]; 58 59 params[0] = mean; 60 params[1] = stdev; 61 for (i = 0; i < 10000; i++) { 62 printf ("%.5g\n", gaussdev (params)); 63 } 64 65 } 66 #endif 67 > -----Original Message----- > From: pd-list-bounces(a)iem.at [mailto:pd-list-bounces@iem.at] > On Behalf Of Andy Farnell > Sent: 16 March 2008 15:31 > To: pd-list(a)iem.at > Subject: [PD] Box Muller Gaussian noise > > Could a stats mathematician please help me check this. (attached) > > I'm following the Box Muller formula for getting a cheap Gaussian > distribution (instead of adding up 12 sources a la central > limit method). > > http://www.dspguru.com/howto/tech/wgn.htm > > Does this look right? > > Also, I have no idea how to check the distribution. It sounds > the same as > uniform noise and looks the same in the spectrograph? What gives? > Do I need to average over a very long time or something to see any > difference? > > Cheers all, > > Andy > > -- > Use the source >

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Re: [PD] Box Muller Gaussian noise - Rain Sound
by alberto.zin＠poste.it 17 Mar '08

17 Mar '08

Hi Andy, Andy Farnell wrote: > JFYI the application is rainfall. Many papers I read describe > rainfall as Gaussian. maybe mine is a simplistic approach, but shouldn't this be one of the cases in which measuring the spectrum of true rainfall sounds and trying to emulate it with one of spectrum matching techniques provides a good approach? > I know from physical analysis that raindrops are uniform in size > and velocity for any local sample, so I've realised this distribution > is about how they fall within an area and pondering how a > distribution can be Gaussian in 2D. Do they take into account the fact that near drops have high frequency content which far ones have high frequency attenuation (and they sum together)? Just thinking... Which references do you have about this issue? Several months ago I wrote a patch for the generation of colored noise, maybe it can be helful here... https://puredata.info/Members/AlbertoZ/ColoredNoise/ AlbertoZ --- http://puredata.org/Members/AlbertoZ http://alberto.zin.googlepages.com/

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Pd-list March 2008