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 vbap8.wav -W ;;; for file output any platform </CsOptions> <CsInstruments> ; Required settings for WebAudio: sr = 48000 ksmps = 128 nchnls = 2 nchnls_i = 1 ; sr = 44100 ; kr = 441 ; ksmps = 100 ; nchnls = 4 vbaplsinit 2, 8, 0, 45, 90, 135, 200, 245, 290, 315 instr 1 asig oscil 20000, 440, 1 a1,a2,a3,a4,a5,a6,a7,a8 vbap8 asig, p4, 0, 20 ;p4 = azimuth ;render twice with alternate outq statements ; to obtain two 4 channel .wav files: outq a1,a2,a3,a4 ; outq a5,a6,a7,a8 ; or use an 8-channel output for realtime output (set nchnls to 8): ; outo a1,a2,a3,a4,a5,a6,a7,a8 endin </CsInstruments> <CsScore> f 1 0 8192 10 1 ; Play Instrument #1 for one second. ; azimuth i 1 0 1 20 i 1 + . 40 i 1 + . 60 i 1 + . 80 i 1 + . 100 i 1 + . 120 i 1 + . 140 i 1 + . 160 e </CsScore> </CsoundSynthesizer>