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 pvsftw.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 ; analyze sound file, creating a PVOC-EX file ires1 system_i 1,{{ pvanal fox.wav fox.pvx }} ; default settings instr 1 inbins = 512 ifn ftgen 0,0,inbins,10,1 ; make ftable fsrc pvsdiskin "fox.pvx", 1, 1 ; read PVOCEX file kflag pvsftw fsrc,ifn ; export amps to table, kamp init 0 if kflag==0 kgoto contin ; only proc when frame is ready tablew kamp,1,ifn ; kill lowest bins, for obvious effect tablew kamp,2,ifn tablew kamp,3,ifn tablew kamp,4,ifn ; read modified data back to fsrc pvsftr fsrc,ifn contin: ; and resynth aout pvsynth fsrc outs aout, aout endin </CsInstruments> <CsScore> i 1 0 5.5 e </CsScore> </CsoundSynthesizer>