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 bformenc.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 = 4410 ; ksmps = 10 ; nchnls = 8 ;bformenc is deprecated, please use bformenc1 instr 1 ; generate pink noise anoise pinkish 1000 ; two full turns kalpha line 0, p3, 720 kbeta = 0 ; fade ambisonic order from 2nd to 0th during second turn kord0 = 1 kord1 linseg 1, p3 / 2, 1, p3 / 2, 0 kord2 linseg 1, p3 / 2, 1, p3 / 2, 0 ; generate B format aw, ax, ay, az, ar, as, at, au, av bformenc anoise, kalpha, kbeta, kord0, kord1, kord2 ; decode B format for 8 channel circle loudspeaker setup a1, a2, a3, a4, a5, a6, a7, a8 bformdec 4, aw, ax, ay, az, ar, as, at, au, av ; write audio out outo a1, a2, a3, a4, a5, a6, a7, a8 endin </CsInstruments> <CsScore> ; Play Instrument #1 for 20 seconds. i 1 0 20 e </CsScore> </CsoundSynthesizer>