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 ; Audio out Audio in -odac -iadc ;;;RT audio I/O ; For Non-realtime ouput leave only the line below: ; -o abs.wav -W ;;; for file output any platform </CsOptions> <CsInstruments> ; Required settings for WebAudio: sr = 48000 ksmps = 128 nchnls = 2 nchnls_i = 1 instr 1 ; Use two syncphasors - one is the "master", ; the other the "slave" ; master's frequency determines pitch imastercps = cpspch(p4) imaxamp = 10000 ; the slave's frequency affects the timbre kslavecps line imastercps, p3, imastercps * 3 ; the master "oscillator" ; the master has no sync input anosync init 0.0 am, async syncphasor imastercps, anosync ; the slave "oscillator" aout, as syncphasor kslavecps, async adeclick linseg 0.0, 0.05, 1.0, p3 - 0.1, 1.0, 0.05, 0.0 ; Output the slave's phase value which is a rising ; sawtooth wave. This produces aliasing, but hey, this ; this is just an example ;) out aout * adeclick * imaxamp endin </CsInstruments> <CsScore> i1 0 1 7.00 i1 + 0.5 7.02 i1 + . 7.05 i1 + . 7.07 i1 + . 7.09 i1 + 2 7.06 e </CsScore> </CsoundSynthesizer>