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 gen34.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 ; partials 1, 4, 7, 10, 13, 16, etc. with base frequency of 400 Hz ibsfrq = 400 inumh = int(1.5 + sr * 0.5 / (3 * ibsfrq)) ; estimate number of partials isrcln = int(0.5 + exp(log(2) * int(1.01 + log(inumh * 3) / log(2)))) ; source table length itmp ftgen 1, 0, isrcln, -2, 0 ; create empty source table ifpos = 0 ifrq = ibsfrq inumh = 0 l1: tableiw ibsfrq / ifrq, ifpos, 1 ; amplitude tableiw ifrq, ifpos + 1, 1 ; frequency tableiw 0, ifpos + 2, 1 ; phase ifpos = ifpos + 3 ifrq = ifrq + ibsfrq * 3 inumh = inumh + 1 if (ifrq < (sr * 0.5)) igoto l1 itmp ftgen 2, 0, 262144, -34, 1, inumh, 1, -1 ; store output in ftable 2 (size = 262144) asig poscil .5, ibsfrq, itmp outs asig, asig endin </CsInstruments> <CsScore> i 1 0 2 e </CsScore> </CsoundSynthesizer>