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 locsig_quad.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 = 4 0dbfs = 1 ga1 init 0 ga2 init 0 ga3 init 0 ga4 init 0 instr 1 krevsend = p4 aout diskin2 "beats.wav", 1, 0, 1 kdegree line 0, p3, 360 ;full circle kdistance line 1, p3 , 1 a1, a2, a3, a4 locsig aout, kdegree, kdistance, krevsend ar1, ar2, ar3, ar4 locsend ga1 = ga1+ar1 ga2 = ga2+ar2 ga3 = ga3+ar3 ga4 = ga4+ar4 outq a1, a2, a3, a4 endin instr 99 ; reverb instrument a1 reverb2 ga1, 3.5, .5 a2 reverb2 ga2, 3.5, .5 a3 reverb2 ga3, 3.5, .5 a4 reverb2 ga4, 3.5, .5 outq a1, a2, a3, a4 ga1 = 0 ga2 = 0 ga3 = 0 ga4 = 0 endin </CsInstruments> <CsScore> ; sine wave. f 1 0 16384 10 1 i 1 0 14 .1 ;with reverb i 1 14 14 0 ;no reverb i99 0 36 e </CsScore> </CsoundSynthesizer>