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 alpass.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 = 100 ; nchnls = 2 0dbfs = 1 gamix init 0 instr 1 acps expon p4, p3, p5 asig vco 0.6, acps, 1 outs asig, asig gamix = gamix + asig endin instr 99 arvt1 line 3.5*1.5, p3, 6 arvt2 line 3.5, p3, 4 ilpt = 0.1 aleft alpass gamix, arvt1, ilpt aright alpass gamix, arvt2, ilpt*2 outs aleft, aright gamix = 0 ; clear mixer endin </CsInstruments> <CsScore> f1 0 4096 10 1 i 1 0 3 20 2000 i 99 0 8 e </CsScore> </CsoundSynthesizer>