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 oscilikts.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: oscilikts example. instr 1 ; Frequency envelope. kfrq expon 400, p3, 1200 ; Phase. kphs line 0.1, p3, 0.9 ; Sync 1 atmp1 phasor 100 ; Sync 2 atmp2 phasor 150 async diff 1 - (atmp1 + atmp2) a1 oscilikts 14000, kfrq, 1, async, 0 a2 oscilikts 14000, kfrq, 1, async, -kphs out a1 - a2 endin </CsInstruments> <CsScore> ; Table #1: Sawtooth wave f 1 0 3 -2 1 0 -1 ; Play Instrument #1 for four seconds. i 1 0 4 e </CsScore> </CsoundSynthesizer>