// run white noise through envelopeNoise n => Envelope e => dac; // infinite time-loopwhile( true ){    // random choose rise/fall time    Math.random2f(10,500)::ms => dur t => e.duration;    // print    <<< "rise/fall:", t/ms, "ms" >>>;     // key on - start attack    e.keyOn();    // advance time by 800 ms    800::ms => now;    // key off - start release    e.keyOff();    // advance time by 800 ms    800::ms => now;}