February 2006 - chuck-users - lists.cs.princeton.edu

Re: [chuck-users] Joysticks anyone?
by Scot Gresham-Lancaster 20 Feb '06

20 Feb '06

While waiting for HID implementation on could use STEIM's JUNXION software which maps HID to MIDI. It works fine with a wide variety of input devices from my experience. http://www.steim.org/steim/products.html " junXion © is a software tool to process incoming data from USB devices (joysticks, touchscreens, mice) and MIDI devices using conditional processing and remapping. The outputted data can be routed to other MIDI controllable music and sound software or hardware." An HID interface inside of chuck would be great, of course ;-) Scot Gresham-Lancaster ¸,ø¤º°`°º¤ø¸,ø¤º°`°º¤ø http://o-art.org/Scot podcast: http://feeds.feedburner.com/blogspot/scotgl blog: http://scotgl.blogspot.com/ Quine in Br@!nF*ck ->++>+++>+>+>+++>>>>>>>>>>>>>>>>>>>>>>+>+>++>+++>++>>+++> +>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>+>+>>+++>>>>+++>>>+++>+>>>>>>>++>+++>+++>+>+++>+>>+++>>>++ +>+>++>+++> >>+>+>+>+>++>+++>+>+>>+++>>>>>>>+>+>>>+>+>++>+++>+++>+>>+++>+++>+>++ +>+>++>+++>+ +>>+>+>++>+++>+>+>>+++>>>+++>+>>>++>+++>+++>+>>+++>>>+++>+>+++>+>>++ +>>+++>>+[[> >+[>]+>+[<]<-]>>[>]<+<+++[<]<<+]>+[>>]+++>+[+[<++++++++++++++++>-]<++ ++++++++.<]

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benchmarking chuck
by Graham Percival 20 Feb '06

20 Feb '06

Hi guys, I've discovered that I can only get 47 sine waves on my system (1 ghz G4 powerbook, 512 megs ram, OSX 10.3.9). I'm curious how other systems compare -- particularly on linux. If chuck works much better on linux, I may switch back to it... Here's the code. I ran it twice (in case there was any caching issue) and listened to the sound. With 48 waves, I could hear crackling; with 50 waves, it was unrecognizable. Cheers, - Graham 48=>int NUMSINS; sinosc s[NUMSINS]; for (0=>int i; i<s.cap();i++) { // s[i] => blackhole; s[i] => dac; 440 => s[i].freq; 0.01 => s[i].gain; } 5::second=>now;

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Joysticks anyone?
by Jim Hinds 20 Feb '06

20 Feb '06

I was caught bragging to my peers (all of them) about how cool chuck is to do performance and real-time good stuff. One asked me about joystick interfaces into chuck and I blanked out. I didn't have an answer -- I should have. So, does anybody know how to read a joystick and get the info into (or through) chuck? Even a Rube Goldberg approach might help me here, although extra credit is given for simplicity and elegance. If the answer only worked on the Mac OS X implementation, that would be just fine. Jim

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Re: chuck-users Digest, Vol 7, Issue 11
by Scot Gresham-Lancaster 17 Feb '06

17 Feb '06

This feels like a real simple problem, but I can not suss it out. In the chuck archive: > Julian Sorrel tacitdynamite at yahoo.com Wed Jan 25 17:05:25 EST > 2006 wrote: > > chuck D:\Chuck\examples\otf_06.ck > (using otf_06.ck here because it doesn't require external sound > files) > this works fine - I hear Chuck playing the file. When I try > chuck D:\Chuck\examples\otf_07.ck > the result is > [chuck](via sndbuf): cannot stat file 'data/snare.wav' ... > even though, again, that file can be found in "dir D:\Chuck > \examples\data" ... This was on an XP machine, but I am getting the same result on my mac and linux boxes. If I put in the full path these sndbuf objects function fine, but if I use a relative address such as "../data/ foo.wav" I get the "cannot stat file 'data/foo.wav' What is the obvious error that I am making? Also, stat? Is that supposed to be start? tocs_backwards Scot Gresham-Lancaster ¸,ø¤º°`°º¤ø¸,ø¤º°`°º¤ø http://o-art.org/Scot podcast: http://feeds.feedburner.com/blogspot/scotgl blog: http://scotgl.blogspot.com/ " Well, I let it play itself as much as I can, but if it doesn't, then I interfere. " David Tudor

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comments, questions about chuck
by Charlls Quarra 16 Feb '06

16 Feb '06

Hi, I wanted to comment about things that i don't find yet on chuck which i would prioritize; please, take this freely as some brainstorming from a guy that has been using SuperCollider3 for some time and finds appealing the sample-accurate emphasis in Chuck. * ugen/plugin infrastructure; what headers you include? what classes you inherit? *block processing; i find amazing the feeling of putting your code directly into the sample stream, but i realize that it comes with a price; but before talking about block processing i wanted to ask first about; *** how much multithread-eable could be chuck; in other words, how possible is to implement shreds in a true multithreaded mode where each shred can run in a different core, but keeping the sample-synchronous approach? i imagine one could relax that to a "block-synchronous" multi-shreding. Currently one could have a chuck instance per core and pipe outs and in thru jack, but this would fix the block frame size to whatever jack is set to. * dynamic allocation of resources; of course, this could be implemented on top of the language; for example, creating a fixed number of audio buffers and calling .read as a score progresses a number of times in the same sndbuf object would (i imagine) free the previous allocated buffer and alloc for the new one. --------------------------------- 1GB gratis, Antivirus y Antispam Correo Yahoo!, el mejor correo web del mundo Abrí tu cuenta aquí

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sndbuf.valueAtPos
by Charlls Quarra 13 Feb '06

13 Feb '06

Hi, I think a way to look ahead buffer values ahead could help solve a few issues, like avoid popping when a buffer jump is done; while (true) ... if (must_jump) { if ( std.fabs( buf.last() - buf.valueAtPos( toPos ) )< 0.01 ) { toPos => buf.pos; false => must_jump; } } ... 100::ms => now; --------------------------------- ¡Llamá a todo el mundo con las mejores tarifas! Comprá tus tarjetas de llamadas en tres simples pasos en Yahoo! Telefonía

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chuck killed when swapping buffer reference
by Charlls Quarra 13 Feb '06

13 Feb '06

This program kills chuck 1.2.0.4 after u>30, when curbuf and nextbuf references are swapped. There is something blatantly wrong with this code? // the patch sndbuf buf => dac; sndbuf buf2 => dac; sndbuf @ curbuf; sndbuf @ nextbuf; 2 => buf.interp; 2 => buf2.interp; // load the file "/home/charles/test.wav" => buf.read; "/home/charles/test.wav" => buf2.read; // set the playback rate (1.0 is default) 1.0 => buf.play; 1.0 => buf2.play; buf @=> curbuf; buf2 @=> nextbuf; 0 =>int u; buf.samples() => int size; std.rand2(0, size) =>int nextpos; 100::ms => dur stepping; nextpos => nextbuf.pos; 0.0 => float mixer; 1.0 => curbuf.gain; 0.0 => nextbuf.gain; // time loop sndbuf @ swap; while( true ) { 1 +=> u; if ( u>30 ) { 5::ms => stepping; 0.05 +=> mixer; 1.0 - mixer => curbuf.gain; mixer => nextbuf.gain; if ( mixer > 0.95 ) { std.rand2(0 , size) => nextpos; curbuf => swap; nextbuf => curbuf; swap => nextbuf; nextpos => nextbuf.pos; 0.0 => mixer; 0 => u; 100::ms => stepping; } } stepping => now; } --------------------------------- 1GB gratis, Antivirus y Antispam Correo Yahoo!, el mejor correo web del mundo Abrí tu cuenta aquí

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Is this possible?
by Mike McGonagle 13 Feb '06

13 Feb '06

Hello all, As ChucK is intended to be an "on the fly" tool for sound generation, I was wondering if it would be possible if the compiler could detect infinite loops that DO NOT advance time. I am thinking about this more from a practical stand point that when some new code is being added to ChucK, if a loop is entered that does not advance time, nor yeild control to another thread, it will SEIZE the machine, with the only recourse is rebooting. While this is practical, I know that it would be one of those feature requests that would be low priority. I only make the recommendation because over the weekend, I was playing with ChucK and ran accross this very problem. I would think that in performance, it would not really be practical to have to reboot. At the same time, I wonder how many performances would rely on entering raw code, instead of loading files. Thanks, Mike

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sndbuf.ck not doing any sound
by Charlls Quarra 13 Feb '06

13 Feb '06

Hi, apparently there is some sort of problem with sndbuf in 1.2.0.4, the sndbuf.ck works ok with some .aif generated with stk, but a .wav generated from ardour won't produce any sound. the .wav information is ======= WAVE Format ======= Format Tag: 3 (0x3) Channels: 1 Samplerate: 48000 avg byte/sec: 192000 Block align: 4 bits/sample: 32 cbSize: 0 This is compiled with makefile.jack, which apparently by defaults links against any libsndfile present in the system, indeed chuck is linked against it; $ ldd /usr/bin/chuck linux-gate.so.1 => (0xffffe000) libasound.so.2 => /usr/lib/libasound.so.2 (0xb7e45000) libjack.so.0 => /usr/lib/libjack.so.0 (0xb7e3a000) libstdc++.so.5 => /usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.5-20050130/libstdc++.so.5 (0xb7d80000) libdl.so.2 => /lib/libdl.so.2 (0xb7d7c000) libm.so.6 => /lib/libm.so.6 (0xb7d59000) libsndfile.so.1 => /usr/lib/libsndfile.so.1 (0xb7d08000) libc.so.6 => /lib/libc.so.6 (0xb7bf0000) libpthread.so.0 => /lib/libpthread.so.0 (0xb7b9e000) libgcc_s.so.1 => /usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.5-20050130/libgcc_s.so.1 (0xb7b96000) /lib/ld-linux.so.2 (0xb7f08000) --------------------------------- 1GB gratis, Antivirus y Antispam Correo Yahoo!, el mejor correo web del mundo Abrí tu cuenta aquí

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multi-channel dac/adc?
by Charlls Quarra 10 Feb '06

10 Feb '06

Hi, I wonder if it is possible to manage input and output of audio hardware with more than 2 channels, this relates to a secondary doubt it's tickling me; why there seems to be a embedded version of stk inside chuck source, instead of relying on stk as a external dependency? Currently stk 4.2.1 supports any number of audio I/O channels, it's possible to easily update chuck to support the new stk? or even cleaner, move stk as a external dependency? p.d: for gentooers, there are now two (preliminary, they work on my x86 box tho) ebuilds for stk and chuck; http://bugs.gentoo.org/show_bug.cgi?id=122321 http://bugs.gentoo.org/show_bug.cgi?id=122332 just put them in a sensible overlay path (i use /usr/local/portage-audio/media-libs/stk and /usr/local/portage-audio/media-sound/chuck) --------------------------------- 1GB gratis, Antivirus y Antispam Correo Yahoo!, el mejor correo web del mundo Abrí tu cuenta aquí

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