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Stanford Laptop Orchestra @ Bing Concert Hall
by Ge Wang 27 May '13

27 May '13

Dear all, The Stanford Laptop Orchestra (SLOrk) celebrates the conclusion of its 2012-2013 season/course with SLOrk's first full-scale concert performance at Stanford University's new Bing Concert Hall! You are cordially invited to an evening of works for the full ensemble of humans, laptops, hemispherical speaker arrays, and new instruments! Stanford Laptop Orchestra: Spring Concert 2013 Wednesday June 5th, 8pm | Bing Concert Hall FREE and open to public (Tickets required for admission -- FREE tickets can be picked up at Bing from one hour before curtain.) For details, visit: http://slork.stanford.edu/events/2013/spring/ http://live.stanford.edu/event.php?code=DOM8 Stanford Laptop Orchestra: http://slork.stanford.edu/ http://www.facebook.com/slork Thank you, and we hope to see you then and there! Best, Jieun and Ge! ~~ Ge Wang Assistant Professor Center for Computer Research in Music and Acoustics (CCRMA) Department of Music (also Computer Science, by Courtesy) Stanford University http://ccrma.stanford.edu/~ge/ ~ Co-founder + Chief Creative Smule http://www.smule.com/ | http://twitter.com/gewang ~~

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Structure of TCP call
by Wolfgang Wagner 19 May '13

19 May '13

I want to call a chuck server from my own client. To do so I need to know in what way the contents of the chuck file and the arguments are transferred. Are there any defined Result codes?

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Using Wavelet Transform
by fernando alonso 14 May '13

14 May '13

Hi guys, I have implemented the Wavelet Transform in Chuck (to work with it moreover of FFT, etc). The code is: fun int[] discreteHaarWaveletTransform( int input[]){ int sum, difference,length,i; int output[input.cap()]; for ( (input.cap() >> 1) => length ; true ; (length >> 1) => length) { for (0 => i; i < length; ++i) { input[i * 2] + input[i * 2 + 1] => sum; input[i * 2] - input[i * 2 + 1] => difference; sum => output[i] ; difference => output[length + i]; } if (length == 1) { return output; } //Swap arrays to do next iteration for (0=>i; i < (length<<1); i++){ output[i] => input[i]; } } } The only one problem is that I don't know how get from adc the values of the microphone input signal. I don't want to use FFT or similar. My implementation of Haar Wavelet Transform need this values. Anybody knows how get its? Thanks so much. -- Fernando Alonso Martín Lualobus(a)gmail.com http://roboticnaturalinteraction.com<http://www.roboticNaturalInteraction.com/famartin.html>

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UAna autoCorr, xCorr and ZeroX
by fernando alonso 29 Apr '13

29 Apr '13

Hi users, I am writting a program to extract audio features but the autoCorr, xCorr always give me a 0 value. ZeroX always give me 0.5 value. This is a brief of the source code: //Definitions for features extraction adc => FFT fft =^ RMS rms => blackhole; fft =^ RollOff rolloff => blackhole; fft =^ Centroid centroid => blackhole; fft =^ Flux flux => blackhole; fft =^ ZeroX zerox => blackhole; adc => AutoCorr autoCorr => blackhole; fft =^ XCorr xCorr => blackhole; //Feauture extraction fft.upchuck() @=> UAnaBlob blobFFT; rms.upchuck() @=> UAnaBlob blobRMS; (blobRMS.fval(0) * 100000) => volumenInst; rolloff.upchuck() @=> UAnaBlob blobRollOff; (blobRollOff.fval(0)*srate )/2 => rollOffInst ; centroid.upchuck() @=> UAnaBlob blobCentroid; (blobCentroid.fval(0)*srate)/2=> centroideInst; flux.upchuck() @=> UAnaBlob blobFlux; blobFlux.fval(0) => similitudInst; zerox.upchuck() @=> UAnaBlob blobZeroX; blobZeroX.fval(0) => zeroXInst; ///<----------- xCorr.upchuck() @=> UAnaBlob blobxCorr; blobxCorr.fval(0) => correlacionCruzadaInst; ///<----------- autoCorr.upchuck() @=> UAnaBlob blobAutocorrelacion; blobAutocorrelacion.fval(0) => autocorrelacionInst; ///<----------- Kindy Regards. -- Fernando Alonso Martín Lualobus(a)gmail.com http://roboticnaturalinteraction.com<http://www.roboticNaturalInteraction.com/famartin.html>

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dynamic linking chuck howto?
by vilbjørg broch 29 Apr '13

29 Apr '13

hi there is there anywhere some sort of description of how to do the dynamic linking to other libraries? Eg. specifically I would very much like to work with the c++ library "Eigen" within a chuck file, is this possible?, if yes are there any hints about how to do this. Already for a while `I read on this page http://chuck.cs.princeton.edu/doc/program/stdlib.html that the documentation is coming, so maybe there is a drawer to pull it out of.?? Greetings Vilbjørg

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midi ports
by Philipp Kroos 24 Apr '13

24 Apr '13

Hi! I'm new to this list (and again to ChucK), so hello first ;) Is there a way to keep midiports 'open'? I can specify the number of audio io's when starting chuck --loop, can I do the same with midi io? I'm using LASH on linux. My objective is to start ChucK and connect a midikeyboard to it. In previous versions (used dracula before) a midi-port came up in LASH when I started a .ck-file that used a MidiIn-object, and stayed open. In the current version, the ports disappear once the program finishes. Thanks for any hints! - Philipp

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TXLF
by Brian Sorahan 24 Apr '13

24 Apr '13

Calling all Texas ChucKists! http://2013.texaslinuxfest.org/content/audio-synthesis-chuck

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LiSa => anything but dac?
by Joel Matthys 09 Apr '13

09 Apr '13

Hi all. I'm not able to get sound from LiSa unless it connects directly to the dac. This simple example gives me nothing but silence: Noise n => LiSa lisa => Chorus c => dac; // lisa => dac works 0.1 => n.gain; 2::second => lisa.duration; 1 => lisa.record; 2::second => now; 0 => lisa.record; 1 => lisa.play; 2::second => now; Is there something I'm overlooking here? Thanks, Joel

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Columbia University Composition/Production Workshop, 4/14/13
by Brad Garton 08 Apr '13

08 Apr '13

Hey chucksters -- For those of you in/around NYC this weekend, this might be of interest: ---------------------------- Composition/Production a workshop on the sound of music The Columbia University Computer Music Center is hosting a day-long workshop on issues arising from 'production': the impact of contemporary recording studio and digital-signal processing tools in crafting the sonic presentation of music. We will be especially focussing on the use of these tools, how they influence our musical creativity and the role recording technologies play in shaping the work we do. Towards that end, we have invited a group of musicians and researchers involved in music technology to help lead a community discussion of these issues. All are welcome to participate in this event. Sunday, April 14, 2013; 10:00 AM - 5:00 PM Computer Music Center, Columbia University Prentis Hall; 632 W. 125th Street, NY with: Ted Coffey, UVa Luke DuBois, NYU Tom Erbe, UCSD Brad Garton, CMC Darwin Grosse, Cycling '74 Terry Pender, CMC Todd Reynolds, MSM Gregory Taylor, Cycling '74 contact: garton(a)columbia.edu free and open to the public

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my first chuck program
by Rustom Mody 28 Mar '13

28 Mar '13

Ive just written a chuck program (my first!) to demo harmonics If there is some way I could write the code better, Id like to know. Also from the audio POV can I do better? Basically I want to show that as I change N from 1 upto 6 the pure sine wave moves from sounding very mathematical/electrical to sounding more musical Any ideas to make it more convincing? Code -------- 8 => int N; SinOsc s[N]; [.45,.3,.2,.1,.05,.03,.02,.01] @=> float gains[]; 440.0 => float freq; for (0 => int i; i < N;i++) { s[i] => dac; freq => s[i].freq; gains[i] => s[i].gain; 440.0 +=> freq; } 1.5::second => now;

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