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

WvOut format
by George Locke 14 Jun '14

14 Jun '14

Hi, The output format of WvOut is coming out wrong. Audacity doesn't recognize it as a wav (does not recognize type, suggests import raw), and windows media player rejects it as well. Importing the file into Audacity as raw data works somewhat, but as I'm diagnosing a dc-offset, I need an exact result. here's some example code: SinOsc s => Gain g => dac; s.freq(400); g.gain(0.5); g => WvOut w => blackhole; "blerg.wav" => string file; w.wavFilename(file); 1::second => now; w.closeFile(file); // what is the function of the argument here? can WvOut record multiple buffers at once? I'm not so experienced with chuck but experienced in "normal" computer programming. Running miniAudicle 1.3.1 with chuck 1.3.3.0 on windows 7 pro sp1 (32 bit). Thanks, George

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Auto tune
by Philipp Blume 11 Jun '14

11 Jun '14

Has anyone tried to make an autotune emulation using ChucK? Seems like it would be doable, albeit with constraints. -- Philipp Blume

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a newbie
by Atasa 05 Jun '14

05 Jun '14

Hi friends, I am very new to sound but i have fallen in love with chuck from what I see on the internet. How is best way to start with chuck? I am running ubuntu 14.04 on a core i3 laptop... already instaled : chuck version: 1.2.0.8 (dracula) exe target: linux (jack) thank you :)

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Re: [chuck-users] Filters and filter education
by Stuart McDonald 04 Jun '14

04 Jun '14

Thanks Julius and Spencer for your suggestions. I think I have a better handle now, but still reading and reading and reading (and taking rather too long to reply). Stuart On Fri, May 23, 2014 at 11:16 PM, <chuck-users-request(a)lists.cs.princeton.edu> wrote: > I like to think of phasing as an approximation to and generalization of flanging, which is easier to understand. In both cases you are basically mixing two copies of the input signal where one copy is delayed relative to the other. This relative delay causes cancellation ("notches") at frequencies where the two signals are out of phase. > > - Julius > --------------------------------- > > Honestly it can take a few readthroughs (of different books even) for it all to sink in. > > Julius also some discussion on implementing a phaser: > https://ccrma.stanford.edu/~jos/pasp/Virtual_Analog_Example_Phasing.html > and (related, simpler) flanging: > https://ccrma.stanford.edu/~jos/pasp/Flanging.html > > spencer

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=<
by vilbjørg broch 03 Jun '14

03 Jun '14

hello what exactly is this operator =< i cannot get my eyes on a reference for it.. it appears in the example powerup.ck in the 'shred' folder by the way this example seems to offer a way/structure for spreading processing load over several cpus, if someone has examples of other ways to spread loads over more cpus then I would be very interested in seeing this. greetings Vilbjørg

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chuck-users archive?
by David Loberg Code 02 Jun '14

02 Jun '14

Does anyone know what happened to the Chuck-users archive? If I go to: http://lists.cs.princeton.edu/pipermail/chuck-users/ (or any specific archived message https://lists.cs.princeton.edu/pipermail/chuck-users/2014-May/007607.html It auto-forwards to this URL: https://lists.cs.princeton.edu/mailman/listinfo david David Loberg Code School of Music Western Michigan University 1903 W Michigan Ave Kalamazoo, MI 49008-5434 code(a)wmich.edu

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Re: [chuck-users] Musical Pieces (Bryan Green)
by Perry R Cook 29 May '14

29 May '14

Bryan, Here's a self-contained, single ChucK file, version of "Smooth Criminal" //**************************************************** // Smooth Criminal Tribute, by P. Cook, May 3, 2009 // because I should be doing more important things // like reading Tom Lieber's Independent work final report :-) 0.1 => float tempo; Mandolin bass1 => HalfRect clip => Gain main => dac; Mandolin bass2 => clip; bass1 => main; bass2 => main; Impulse kick => TwoPole kp => main; 50.0 => kp.freq; 0.99 => kp.radius; 0.1 => kp.gain; Noise n => ADSR snare => TwoPole sp => Delay sdel => main; 200.0 => sp.freq; 0.9 => sp.radius; 0.1 => sp.gain; snare.set(0.001,0.1,0.0,0.1); (4.0 * tempo) :: second => sdel.max => sdel.delay; 0.3 => bass1.bodySize => bass2.bodySize; 0.03 => bass1.stringDetune; 0.03 => bass2.stringDetune; 0.05 => bass1.stringDamping; 0.05 => bass2.stringDamping; SndBuf dope => main; "special:dope" => dope.read; 0.0 => dope.gain; SndBuf dope2 => main; "special:dope" => dope2.read; 0.0 => dope2.gain; Blit b => TwoPole p1 => Gain voice; b => TwoPole p2 => voice; b => TwoPole p3 => voice; 100 => b.harmonics; 0.998 => p1.radius => p2.radius => p3.radius; 0.03 => p1.gain; 0.01 => p2.gain; 0.01 => p3.gain; 0.0 => b.gain; SinOsc vib => blackhole; 6.0 => vib.freq; Std.mtof(60) => b.freq; Std.mtof(64) => float bTarg; doVerse(4); doChorus(4); spork ~ doMoogy(4); doVerse(4); doChorus(4); spork ~ gliss(); doTag(); spork ~ fade(); spork ~ doMoogy(4); doDopeVerse(4); fun void doMoogy(int howmany) { Moog m => JCRev r => main; 0.9 => m.filterQ; 0.9 => m.filterSweepRate; 0.05 => r.mix; 15.0 => r.gain; [69, 71, 72, 74, 76, 78, 79, 81] @=> int scale[]; 0 => int measure; 0 => int note; while (measure < howmany) { 0 => int note; while (note < 32) { 1 => m.noteOff; Std.mtof(scale[Std.rand2(0,7)]) => m.freq; if (Std.rand2f(0.0,1.0) < 0.4) 1 => m.noteOn; tempo :: second => now; note++; } measure++; } r =< main; } fun void doChorus(int howmany) { [64,64,64,64,64,64,67,64,64,64,67,64,64,64,62,60,59,60] @=> int dopes[]; [ 1, 1, 1, 1, 1, 1, 2, 4, 1, 1, 2, 4, 1, 1, 2, 2, 2, 2] @=> int ddurs[]; 0 => int measure; 0 => int note; 3.0 => dope.gain; while (measure < howmany) { Std.mtof(41) => bass1.freq; 1 => bass1.noteOn; Std.mtof(41-12) => bass2.freq; 1 => bass2.noteOn; (2.0 * tempo) :: second => now; 0 => int note; while (note < 18) { 1.03 * (Std.mtof(dopes[note]) / Std.mtof(67)) => dope.rate; 0 => dope.pos; (tempo*ddurs[note]) :: second => now; note++; } measure++; } } fun void doVerse(int howmany) { [45,45,45,45,45,45,45,47,47,47,47,48,48,48,48,47,43,40,45] @=> int notes[]; [ 2, 1, 1, 1, 1, 1, 1, 2, 4, 1, 1, 2, 4, 1, 1, 2, 2, 2, 2] @=> int durs[]; [ 1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 0] @=> int kicks[]; [ 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0] @=> int snares[]; 0 => int note; 0 => int measure; while (measure < howmany) { Std.mtof(notes[note]) => bass1.freq; Std.mtof(notes[note]-12) => bass2.freq; 1 => bass1.noteOn; 1 => bass2.noteOn; if (kicks[note]==1) 1 => kick.next; if (snares[note]==1) 1 => snare.keyOn; (durs[note] * tempo/2.0) :: second => now; 0 => bass1.noteOn => bass2.noteOn; 1 => snare.keyOff;; (durs[note] * tempo/2.0) :: second => now; note++; if (note==19) { 0 => note; measure++; } } } fun void doTag() { [64,60,62,64,40,64,60,62,64,40] @=> int dopes2[]; [ 2, 2, 2, 2, 4, 2, 2, 2, 2, 4] @=> int ddurs2[]; 0 => int measure; 0 => int note; 3.0 => dope.gain; 3.0 => dope2.gain; while (note < 10) { 1.03 * (Std.mtof(dopes2[note]) / Std.mtof(67)) => dope2.rate; dope2.rate()*2.0 => dope.rate; 0 => dope2.pos; 0 => dope.pos; (tempo*ddurs2[note]) :: second => now; note++; } 0.0 => dope2.gain; Noise n => main; 0.1 => n.gain; 0.07 :: second => now; n =< main; 0.03 :: second => now; 4.0 => b.gain; voice => main; Std.mtof(76) => dope2.rate; 0 => dope2.pos; 0.4 :: second => now; 300.0 => p1.freq; 900.0 => p2.freq; 2300.0 => p3.freq; Std.mtof(62) => bTarg; 0.1 :: second => now; 360.0 => p1.freq; 2000.0 => p2.freq; 2600.0 => p3.freq; 0.03 => p1.gain; 0.03 => p2.gain; 0.03 => p3.gain; Std.mtof(60) => bTarg; 0.1 :: second => now; 700.0 => p1.freq; 1100.0 => p2.freq; 2500.0 => p3.freq; Std.mtof(57) => bTarg; 0.2 :: second => now; 700.0 => p1.freq; 1200.0 => p2.freq; 2500.0 => p3.freq; 0.0 => b.gain; voice =< main; } fun void gliss() { while (1) { (0.01* bTarg) + (0.99 * b.freq()) => b.freq; 0.0005 :: second => now; } } fun void fade() { while (1) { (0.985 * main.gain()) => main.gain; 0.04 :: second => now; } } fun void doDopeVerse(int howmany) { [45,45,45,45,45,45,45,47,47,47,47,48,48,48,48,47,43,40,45] @=> int notes[]; [ 2, 1, 1, 1, 1, 1, 1, 2, 4, 1, 1, 2, 4, 1, 1, 2, 2, 2, 2] @=> int durs[]; [ 1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 0] @=> int kicks[]; [ 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0] @=> int snares[]; 0 => int note; 0 => int measure; 3.0 => dope.gain; while (measure < howmany) { Std.mtof(notes[note]) => bass1.freq; 4.1 * (Std.mtof(notes[note]) / Std.mtof(67)) => dope.rate; 0 => dope.pos; Std.mtof(notes[note]-12) => bass2.freq; 1 => bass1.noteOn; 1 => bass2.noteOn; if (kicks[note]==1) 1 => kick.next; if (snares[note]==1) 1 => snare.keyOn; (durs[note] * tempo/2.0) :: second => now; 0 => bass1.noteOn => bass2.noteOn; 1 => snare.keyOff;; (durs[note] * tempo/2.0) :: second => now; note++; if (note==19) { 0 => note; measure++; } } }

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ChucK - Musical Pieces?
by Bryan Green 26 May '14

26 May '14

Hello, all! As the example files included with ChucK don't really demonstrate full pieces, I was wondering if there is a source of ChucK pieces available; that is, ChucK files, that when run, 'perform' a complete piece. I've got the basics of ChucK down, but now I'm trying to wrap my head around the various ways of actually creating a complete, algorithmic piece of music, and would love to see some examples! Thanks! Bryan

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Re: [chuck-users] Filters and filter education
by Stuart McDonald 23 May '14

23 May '14

Hi Rich, thanks for those links, I'll check them out :). ---------- Forwarded message ---------- From: "Rich Caloggero" <rjc(a)mit.edu> To: <chuck-users(a)lists.cs.princeton.edu> Cc: Date: Thu, 22 May 2014 17:11:45 -0400 Subject: Re: [chuck-users] Filters and filter education This may help: http://www.analog.com/en/content/scientist_engineers_guide/fca.html The subject is daunting. I'm a computer person so I understand the computer bits, but the math is still a stretch for me. This guy does a good job explaining things both in words and in code. Best part is that its free and available online, or you can download the html. -- Rich

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Filters and filter education
by Stuart McDonald 22 May '14

22 May '14

I've been periodically fussing over trying to construct a phaser (the effect, not the fictional weapon) and while there's a working ChucKian example at http://electro-music.com/forum/viewtopic.php?t=23264 , I'd like to understand more about what's going on. The example uses a PoleZero filter, which may as well be called PixieWand for all I know what it actually does. There are numerous other filter UGens as well; I think there may be a whole world of filtration out there I can't even imagine. The ChucK documentation doesn't provide descriptions of the mechanics of these filters. I get the impression that they're things you're expected to understand if you have a formal background in DSP, and if you don't, well, it's a bit of a leap to get there. For now I'm optimistic I can get educated in some way. A 2006 post on this subject on this list (https://lists.cs.princeton.edu/pipermail/chuck-users/2006-June/000763.html) suggested reading Real Sound Synthesis for Interactive Applications (http://www.amazon.com/Real-Sound-Synthesis-Interactive-Applications/dp/1568…) by Perry R. Cook. The book looks promising, but I'm not sure if it tackles the subject to a depth that would be helpful. Has anyone read it and could recommend? Perry, what do you reckon? =D Many thanks, Stuart

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