Programmiersprachen für Audio, Proseminar Medienverarbeitung I - Audio, WS.99/00, Stefan Reich, Oliver Leistert.

[Teil II: Spezielle Audio-Programmiersprachen]

Supercollider-Beispiele (5)

play({
    OverlapTexture.ar({
        var freq, seq, excitation, resonator;

        freq = 40 + 300.0.rand;       // random base frequency

        seq = ImpulseSequencer.ar(    // outputs a sequence of single sample triggers
            pat.asStream,             // create a stream to iterate over pattern
            Impulse.ar(10));          // a clock for the sequencer at 10 beats per second

        excitation = Decay.ar(        // a decaying envelope for the noise
            seq,                      // impulse sequence triggers decay envelopes
            0.1,                      // 60 dB decay time
            PinkNoise.ar(0.01));      // noise is the exciter

        resonator = Klank.ar(         // use Klank as a percussion resonator
            `[                        // filter bank specification array:
                Array.fill(n, { freq + (4.0*freq).linrand }), // resonant frequencies
                nil,                  // amplitudes default to 1.0
                Array.fill(n, { 0.2 + 3.0.linrand })          // ring times
            ], excitation);

        Pan2.ar(resonator, 1.0.rand2) // random pan position
        // return the Pan2
    }, 8, 4, 4, 2); // sustainTime, fadeTime, overlapDensity, number of channels
});