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 ;;;RT audio out ;-iadc ;;;uncomment -iadc if RT audio input is needed too ; For Non-realtime ouput leave only the line below: ; -o areson.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 ; unfiltered noise asig rand 0.5 ; white noise signal. outs asig, asig endin instr 2 ; filtered noise kcf init 1000 kbw init 100 asig rand 0.5 afil areson asig, kcf, kbw afil balance afil,asig ; afil = very loud outs afil, afil endin </CsInstruments> <CsScore> i 1 0 2 i 2 2 2 e </CsScore> </CsoundSynthesizer>