This should play if your Web browser has WebAssembly enabled (most do). Most examples will play unless they need to load files. The first time you click Play, Csound will spend a few seconds loading, then play. You can edit this code and replay it.
<CsoundSynthesizer> <CsOptions> ; Select audio/midi flags here according to platform -odac ;;;realtime audio out ;-iadc ;;;uncomment -iadc if realtime audio input is needed too ; For Non-realtime ouput leave only the line below: ; -o loopxseg.wav -W ;;; for file output any platform </CsOptions> <CsInstruments> ; Required settings for WebAudio: sr = 48000 ksmps = 128 nchnls = 2 nchnls_i = 1 ; sr = 44100 ; ksmps = 32 ; nchnls = 2 0dbfs = 1 instr 1 kfreq rspline 0.01,20,0.2,1 ; freq. of loop repetition created by random spline ktrig init 0 ; loop restart trigger (not used) iphase = 0 ; initial phase ; loop of filter cutoff values (oct format). Rescaled further down. kcfoct loopxseg kfreq, ktrig, iphase, 1,1,0,0 kenv linseg 0,0.01,1,p3-5.01,1,5,0 asig vco2 0.2*kenv,cpsmidinn(48),0 kdep rspline 5,8,0.2,1 ; filter depth created by a random spline kcf port cpsoct((kcfoct*kdep)+4), 0.001 ; smooth filter changes asig moogladder asig,kcf,rnd(0.6) aL,aR pan2 asig,rnd(1) outs aL, aR endin </CsInstruments> <CsScore> i 1 0 60 e </CsScore> </CsoundSynthesizer>