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 resonxk.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 gisin ftgen 0, 0, 2^10, 10, 1 instr 1 ksig randomh 400, 1800, 150 aout poscil .2, 1000+ksig, gisin outs aout, aout endin instr 2 ksig randomh 400, 1800, 150 kcf line 1, p3, 1000 ;vary high-pass ilay = p4 ksig resonxk ksig, kcf, 100, ilay aout poscil .2, 1000+ksig, gisin asig interp ksig ;convert k-rate to a-rate aout balance asig, aout ;avoid getting asig out of range outs aout, aout endin </CsInstruments> <CsScore> i 1 0 5 i 2 6 5 1 ;number of filter stack = 1 i 2 12 5 5 ;number of filter stack = 5 e </CsScore> </CsoundSynthesizer>