// noise generator, biquad filter, dac (audio output) Noise n => BiQuad f => dac; // set biquad pole radius .99 => f.prad; // set biquad gain .05 => f.gain; // set equal zeros 1 => f.eqzs; // our float 0.0 => float t; // infinite time-loop while( true ) { // sweep the filter resonant frequency 100.0 + Std.fabs(Math.sin(t)) * 15000.0 => f.pfreq; t + .01 => t; // advance time 5::ms => now; }