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 No messages -odac -iadc -d ;;;RT audio I/O ; For Non-realtime ouput leave only the line below: ; -o oscilikt.wav -W ;;; for file output any platform </CsOptions> <CsInstruments> ; Required settings for WebAudio: sr = 48000 ksmps = 128 nchnls = 2 nchnls_i = 1 ; Initialize the global variables. ; sr = 44100 ; kr = 4410 ; ksmps = 10 ; nchnls = 1 ; Instrument #1. instr 1 ; Generate a uni-polar (0-1) square wave. kamp1 init 1 kcps1 init 2 itype = 3 ksquare lfo kamp1, kcps1, itype ; Use the square wave to switch between Tables #1 and #2. kamp2 init 20000 kcps2 init 220 kfn = ksquare + 1 a1 oscilikt kamp2, kcps2, kfn out a1 endin </CsInstruments> <CsScore> ; Table #1, a sine waveform. f 1 0 4096 10 0 1 ; Table #2: a sawtooth wave f 2 0 3 -2 1 0 -1 ; Play Instrument #1 for two seconds. i 1 0 2 </CsScore> </CsoundSynthesizer>