Hi, Remembering Jean Claude Risset. Just thought I'll share my take on the glissandi paradox. -- Juan Reyes. //* ****************************************************************** //* //* Risset's paradox aka Shepard Tone //* (see Dodge's Elements of CM pp-94-96) //* //* This take Juan Reyes, 03/08/2017 //* //* //* Toggle values: baseFreq and baseDur // sample rate 1::second / 1::samp => float srate; // Function for normal curves to factor amplitude fun float normfn (float x, float d) { return Math.exp(-4.8283*(1-Math.cos(2*Math.PI* (x-((d*srate*0.5)-0.5))/(d*srate)))); } // Toggle values // -------------- 1000.0 => float baseFreq; 3.33 => float baseDur; baseDur*srate => float samples; samples/7.0 => float phaseoffs; // Frequency Factors [0.0, 51.2, 102.4, 153.6, 204.8, 256.0, 307.2, 358.4, 409.6, 460.8] @=> float fqFactors[]; // A bank of sine oscillators SinOsc oscBank[10]; // Gains for oscillator bank Gain gainsArr[10]; // Signal for(0=> int i; i < oscBank.cap(); i++) { baseFreq+fqFactors[i]=> oscBank[i].freq; oscBank[i] => gainsArr[i] => dac; } // Count samples 0.0 => float sx; while( true ) { for (0 => int j; j < oscBank.cap(); j++) { 0.25*normfn((sx+((j+1)*phaseoffs)), baseDur) => gainsArr[j].gain; } if (sx > samples) { 0 => sx; } else { 1 +=> sx; } // advance "1" sample. 1.0::samp => now; }