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

Polyphony/Multiple Instruments in ChucK
by Curtis Ullerich 20 Jan '13

20 Jan '13

Hello, In my experiments with ChucK I've reached the point of wanting to use multiple instruments in polyphony (two Moogs in this case). My example is on GitHub here<https://github.com/curtisullerich/computer-music/blob/d37a98cb4f7b237b1791b…> . My usage pattern feels awkward and not very clean, and I'm hoping someone else has encountered the same situation. My question: What is a good way to manage and use multiple instruments in ChucK? It seems like a simple thing to want to do, but I haven't found any examples in the doc that work this way. Am I completely backwards about how I want to accomplish polyphony? My particular use case is made most awkward because I'm using an ADSR envelope. I think it's mostly ChucK's style of time tracking/advancement that's derailing me. If I'm not describing this well enough, please let me know. Any advice is appreciated. Thanks! Curtis

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C function integration problem into a chugin
by Julien Saint-Martin 12 Jan '13

12 Jan '13

Hi all, I am currently trying to create a chugin with IBNIZ http://pelulamu.net/ibniz/ (it generate weird and loud sound, take care of your ears, headphones and speakers if you try it!!). My target is to only have sound from it. Ibniz source code is C, so I added the C file defining the functions I want to reuse inside the chugin make file: C_MODULES=vm_slow.c I call 3 of these functions inside the code generated by chuginate script: ibniz class defined in ibniz.cpp (chugin cpp source file) Compilation seems ok except 2 warnings: ~/Chuck/chugins/ibniz$ make clean; make linux rm -rf vm_slow.o ibniz.o ibniz.chug gcc -D__LINUX_ALSA__ -I../chuck/include/ -fPIC -O3 -c -o vm_slow.o vm_slow.c g++ -D__LINUX_ALSA__ -I../chuck/include/ -fPIC -O3 -c -o ibniz.o ibniz.cpp In file included from ibniz.h:12:0, from ibniz.cpp:15: vm.h:46:3: warning: anonymous type with no linkage used to declare variable '<anonymous struct> vm' with linkage [enabled by default] ibniz.cpp: In constructor 'ibniz::ibniz(double)': ibniz.cpp:45:24: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings] gcc -shared -lstdc++ -o ibniz.chug vm_slow.o ibniz.o Then I perform the: sudo make install And the problem occurs when I try to launch a test.ck file [test.ck]:line(1): undefined type 'ibniz'... [test.ck]:line(1): ... in declaration ... I added verbose option 3 to check what goes wrong and I found that my ibniz.chug is not loaded cause of the following error: [chuck]:(3:SEVERE): | | error loading chugin 'ibniz.chug', skipping [chuck]:(3:SEVERE): | | error from chuck_dl: '/usr/lib/chuck/ibniz.chug: undefined symbol: _Z6vm_runv' vm_run() is one of the C functions I call in the chugin cpp file. So I suppose _Z6vm_runv is linked to it. As a test, I tried to remove all these C functions and the chugin is loading and running. So I think I made something wrong to integrate these functions correctly inside the chugin code. Any idea? What is chuck_dl? Thanks for your help. Ju

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Dealing with String objects?
by Wolfgang Gil 09 Jan '13

09 Jan '13

Hello chuckers I am looking for a reference to the 'string' object class in chuck. I am having a hard time trying to guess what methods are available for the class. I also recently came across with the StringTokenizer object but it seems to work only when the token is a white space. Is it possible to assign a different token to the object? here is what I am working on UGen uArray[3]; new SinOsc @=> uArray[0]; new TriOsc @=> uArray[1]; new PulseOsc @=> uArray[2]; for(0 => int i; i < 3; i++) { <<<getType(uArray[i].toString())>>>; now + 1::second => now; } What gets printed is the object's type plus what I believe is a reference to memory that I am currently not interested in, separated by a colon ( TriOsc:1001f36a0) Happy holidays! -- http://www.wolfganggil.com <http://www.wolfganggil.com/about>

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allpass filter/delay
by Michael Heuer 08 Jan '13

08 Jan '13

Hello ChucKers, I got lost for several hours recently reading Sean Costello's The Halls of Valhalla blog http://valhalladsp.wordpress.com/2011/01/21/reverbs-diffusion-allpass-delay… I can't help but think that if I could figure out the notation of say Moorer's Figure 2.30 above to the point where I might translate into higher level ChucK delays, gains, and filters I could get lost for several hours making strange reverbs in Chuck instead. Can anyone help me get started? Thanks, michael

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link to emacs mode broke in wiki
by Roberto Mallo 06 Jan '13

06 Jan '13

Hi to everyone, I'm beginning to make some noise with ChucK and wanted to try out the emacs mode but the link that points to it in the wiki doesn't work, I get a 404 error everytime. I tried googling but haven't found another source for the mode. Can anyone help? Thanks in advance! -- Roberto Mallo joseghast.org taumaturgia.com

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New Sound Arts MFA Program @ Columbia University
by Brad Garton 04 Jan '13

04 Jan '13

This may be of interest to members of the chuck-users mailing-list: ---------------------------- NEW SOUND ARTS MFA PROGRAM AT COLUMBIA UNIVERSITY We are thrilled to announce the new Sound Arts MFA program offered by the Columbia University School of the Arts in association with the Department of Music and the Computer Music Center. Applications are now being accepted! More information is available here: http://arts.columbia.edu/sound-arts Please feel free to pass this along! ---------------------------- Brad Garton http://music.columbia.edu/~brad

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on a lighter/cheery note...
by David Ogborn 25 Dec '12

25 Dec '12

Hi all, The Cybernetic Orchestra did some live-coding (ChucK) of Jingle Bells for our university's annual video holiday card! http://www.youtube.com/watch?v=dWQermBvOQM&feature=youtu.be Happy Holidays everyone! Yours truly, David -------------------------------------------------------------------------------- Dr. David Ogborn, <ogbornd(a)mcmaster.ca> Communication Studies & Multimedia, McMaster University Director, Cybernetic Orchestra & ESP Studio http://soundcloud.com/cyberneticorchestra http://esp.mcmaster.ca http://davidogborn.net http://twitter.com/ogbornd 1-905-525-9140 ext 27603

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chuck output to console on stdout
by stephane.poirier＠oifii.org 13 Dec '12

13 Dec '12

Hi All, Here below are 3 lines of code in chuck. How could I modify it to output the value of T in the chout? // this synchronizes to period 0.75::second => dur T; T - (now % T) => now; // output to console on stdout chout <= 1 <= " foo " <= 5.5 <= IO.newline(); Regards, Stephane

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chuck --adc not working on osx
by Michael Heuer 11 Dec '12

11 Dec '12

Hello, I've been using chuck 1.3.1.3 on OSX for quite a while now without any problems $ chuck --help chuck version: 1.3.1.3 (chimera) mac os x : intel : 64-bit but I just tried configuring the adc for the first time and it is not working for me. $ chuck --probe [chuck]: found 4 device(s) ... [chuck]: ------( audio device: 1 )--------------- [chuck]: device name = "Apple Inc.: Built-in Microphone" [chuck]: probe [success] ... [chuck]: # output channels = 0 [chuck]: # input channels = 2 [chuck]: # duplex Channels = 0 [chuck]: default output = NO [chuck]: default input = YES [chuck]: natively supported data formats: [chuck]: 32-bit float [chuck]: supported sample rates: [chuck]: 8000 Hz [chuck]: 9600 Hz [chuck]: 11025 Hz [chuck]: 16000 Hz [chuck]: 22050 Hz [chuck]: 32000 Hz [chuck]: 44100 Hz [chuck]: 48000 Hz [chuck]: 88200 Hz [chuck]: 96000 Hz [chuck]: [chuck]: ------( audio device: 2 )--------------- [chuck]: device name = "Apple Inc.: Built-in Input" [chuck]: probe [success] ... [chuck]: # output channels = 0 [chuck]: # input channels = 2 [chuck]: # duplex Channels = 0 [chuck]: default output = NO [chuck]: default input = NO [chuck]: natively supported data formats: [chuck]: 32-bit float [chuck]: supported sample rates: [chuck]: 8000 Hz [chuck]: 9600 Hz [chuck]: 11025 Hz [chuck]: 16000 Hz [chuck]: 22050 Hz [chuck]: 32000 Hz [chuck]: 44100 Hz [chuck]: 48000 Hz [chuck]: 88200 Hz [chuck]: 96000 Hz [chuck]: [chuck]: ------( audio device: 3 )--------------- [chuck]: device name = "Apple Inc.: Built-in Output" [chuck]: probe [success] ... [chuck]: # output channels = 2 [chuck]: # input channels = 0 [chuck]: # duplex Channels = 0 [chuck]: default output = YES [chuck]: default input = NO [chuck]: natively supported data formats: [chuck]: 32-bit float [chuck]: supported sample rates: [chuck]: 44100 Hz [chuck]: 48000 Hz [chuck]: 88200 Hz [chuck]: 96000 Hz [chuck]: [chuck]: ------( audio device: 4 )--------------- [chuck]: device name = "Apogee Electronics: Jam" [chuck]: probe [success] ... [chuck]: # output channels = 0 [chuck]: # input channels = 1 [chuck]: # duplex Channels = 0 [chuck]: default output = NO [chuck]: default input = NO [chuck]: natively supported data formats: [chuck]: 32-bit float [chuck]: supported sample rates: [chuck]: 44100 Hz [chuck]: 48000 Hz [chuck]: [chuck]: [chuck]: ------( chuck -- 0 MIDI inputs )------ [chuck]: [chuck]: ------( chuck -- 0 MIDI outputs )----- [chuck]: $ chuck --dac:3 --adc:4 --srate:48000 --loop [chuck]: unable to find adc '4'... [chuck]: | (try --probe to enumerate audio device info) $ chuck --dac:3 --adc:3 --srate:48000 --loop [chuck]: unable to find adc '3'... [chuck]: | (try --probe to enumerate audio device info) $ chuck --dac:3 --adc:2 --srate:48000 --loop [chuck]: unable to find adc '2'... [chuck]: | (try --probe to enumerate audio device info) $ chuck --dac:3 --adc:1 --srate:48000 --loop [chuck]: unable to find adc '1'... [chuck]: | (try --probe to enumerate audio device info) $ chuck --dac:3 --adc:0 --srate:48000 --loop [chuck]: unable to find adc '0'... [chuck]: | (try --probe to enumerate audio device info) $ chuck --dac:3 --adc --srate:48000 --loop [chuck]: (CoreAudio) timeout waiting for sample rate update for device (2)... [chuck]: cannot initialize audio device (use --silent/-s for non-realtime) $ chuck --dac:3 --adc --srate:44100 --loop [chuck]: (CoreAudio) timeout waiting for sample rate update for device (2)... [chuck]: cannot initialize audio device (use --silent/-s for non-realtime) Same without the Jam connected, or with Apogee ONE connected, or with Presonus AudioBox USB connected. Am I just missing something? michael

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LiSa question
by Aurélien Bondis 10 Dec '12

10 Dec '12

Hi, I'm trying to figure out how to have multiple samples of different sizes looping together. I think I kind of have it but would like to be sure :) Are the voices here for that? Record does not have a voice option, so I understand that I have to explicitly tell my sample what part of it is supposed to be 'voice 1' or 'voice 2'. Also in my code, I seem to have my voice2 starting from something like 1second before its end and then loop, did I miss something ? Here is my code: --------------------------------------------------------- //a simple signal path adc => LiSa saveme => dac; //gotta tell LiSa how much memory to allocate 60::second => saveme.duration; saveme.recRamp(200::ms); <<< "recording 1" >>>; 1::second => now; 1 => saveme.record; 3::second => now; 0 => saveme.record; // Set voice 1 start and stop to use in the loop saveme.loopStart(1, 0::second); saveme.loopEnd(1, 3::second); <<< "recording 2" >>>; 1::second => now; 1 => saveme.record; 10::second => now; 0 => saveme.record; // Set voice 2 start and stop to use in the loop saveme.loopStart(2, 3::second); saveme.loopEnd(2, 13::second); // set voice 1 to loop saveme.loop(1,1); // set voice 2 to loop saveme.loop(2,1); <<< "playing">>>; // play loops saveme.play(1,1); saveme.play(2,1); while (true) { 1::second => now; } ------------------------------------------------------------ Thanks for your help. Aurélien.

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