December 2009 - chuck-users - lists.cs.princeton.edu

background music
by Tom Lieber 07 Dec '09

07 Dec '09

could you guys make this a little better for me? one file max tho. thx 100::ms => dur d; Step s => dac; 0.1 => s.gain; Moog w => dac; 0.1 => w.gain; 1 => w.noteOn; Moog w2 => Envelope env => dac; .2 => w2.gain; 1 => w2.noteOn; d => env.duration; 1 => env.keyOn; fun float warble() { return Std.rand2f(2.5/1.01, 2.5*1.01); } fun void sweep(float freq, dur d) { w.freq() => float start; for(0 => int i; i < 10; i++) { (i / 10.) * (freq - start) + start => w.freq; w.freq() * warble() => w2.freq; d / 10. => now; } freq => w.freq; freq * warble() => w2.freq; walk(env.target(), .0, 1, .3) => env.target; 1 => env.keyOn; } fun void yay() { d * 4 => dur e; while(true) { Std.rand2(1, 2)::e => now; spork ~ sweep(Std.rand2(60, 70) => Std.mtof, Std.rand2f(1/60., 1/10.)::e); } } spork ~ yay(); while(true) { Std.rand2(1, 2)::d => now; 0.1 => s.next; Std.rand2(1, 2)::d => now; -0.1 => s.next; d => now; 1 => s.next; d => now; -1 => s.next; } fun float walk(float current, float min, float max, float step) { Std.rand2f(current - step, current + step) => float n; if(n < min) min => n; if(n > max) max => n; return n; } -- Tom Lieber http://AllTom.com/

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Bouncing .ck to audio files
by Ryan Wieghard 07 Dec '09

07 Dec '09

Hey all, I was wondering if there is a way to make the output of my .ck file an mp3 or wav file. Thanks Ryan. -- "Le savant n’étudie pas la nature parce que cela est utile ; il l’étudie parce qu’il y prend plaisir et il y prend plaisir parce qu’elle est belle." - Henri Poincaré

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FormSwep
by Robert Poor 07 Dec '09

07 Dec '09

Is FormSwep available in ChucK? I see it in the source code, I see it described in previous STK docs, the Moog UGen makes mention of it, but attempting to compile: FormSwep fs => blackhole; errors with "undefined type FormSwep in declaration" - Rob

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chuck 1.2.1.3 weird debug messages and aggregate devices
by mike clemow 06 Dec '09

06 Dec '09

Hi, chuck version: 1.2.1.3 (dracula) exe target: mac os x : intel I'm having trouble getting Chuck to not segfault using aggregate devices (only when trying to use more channels than in the first device) in Mac OS X 10.6. Has this always been an issue? Working around this for now, however, I'm curious what others' experiences have been with aggregate devices. Also, what's with the malloc messages in my newly compiled-from-source 1.2.1.3? Again, curious... Best, Mike -- http://michaelclemow.com http://semiotech.org

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Local-static bug
by Hans Aberg 05 Dec '09

05 Dec '09

For some reason, 'chuck' does not admit different type argument overloading on local & static class functions. The example below works as long as one does not call the static function. So either it should complain that it is illegal when encountering it in the class or admit this kind of overloading. Originally, I used a function "add" on intervals - not as artificial as the example below. Hans ---- local-static.ck ---- class Test { fun void print(float x) { chout <= "Local fun: " <= x <= "\n"; } fun static void print(float x, float y) { chout <= "Static fun: (" <= x <= ", " <= y <= ")\n"; } } Test.print(1, 2); // This call causes the run error. //Test t; //t.print(2); ---- run ---- $ chuck local-static.ck [local-static.ck]:line(11): cannot access member 'Test.print' without object instance... ----

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the novice chucKster trying to navigate the Event class
by Ryan Wieghard 01 Dec '09

01 Dec '09

Hello! So I am trying to design a data structure that is a list of musical events that are composed of duration, amplitude, and a list of four pitches to be assigned to SinOsc's . When I was constructing the idea, I called the atomic units of the lists "events" not knowing that there existed an Event class in chucK. When I researched the Event class, however, I become confused as to whether or not extended that class would be appropriate for what I am trying to achieve. I was wondering if someone could advise me the easiest way of going about creating a list of lists of two ints and a list: ["Event"Object1, "Event"Object2, ...,"Event"ObjectN] where "Event"Object[i] = [int amplitude, int duration, [pitch1,pitch2,pitch3,pitch4]] The idea is that one can simply iterate across the above list of "Event"Objects and assign a bank of four SinOsc's the pitchs 1 through 4; assign an envelope's gain to the amplitude, and advanced time by duration. I apologize if the above is an ugly articulation of my idea. Sincerely, Ryan. -- "Le savant n’étudie pas la nature parce que cela est utile ; il l’étudie parce qu’il y prend plaisir et il y prend plaisir parce qu’elle est belle." - Henri Poincaré

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