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 ; ksmps = 32 ; nchnls = 8 0dbfs = 1 instr 1 ;without arrays ; generate pink noise anoise pinkish 1 ; two full turns kalpha line 0, p3, 720 kbeta = 0 ; generate B format aw, ax, ay, az, ar, as, at, au, av bformenc1 anoise, kalpha, kbeta ; decode B format for 8 channel circle loudspeaker setup a1, a2, a3, a4, a5, a6, a7, a8 bformdec1 4, aw, ax, ay, az, ar, as, at, au, av ; write audio out outo a1, a2, a3, a4, a5, a6, a7, a8 endin instr 2 ;with arrays (csound6) ;set file names for: S_bform = "bform_out.wav" ;b-format (2nd order) output S_sound = "sound_out.wav" ;sound output ; generate pink noise anoise pinkish 1 ; two full turns kalpha line 0, p3, 720 kbeta = 0 ;create array for B-format 2nd order (9 chnls) aBform[] init 9 ; generate B-format aBform bformenc1 anoise, kalpha, kbeta ;write out b-format fout "fout.wav", 18, aBform ;create array for audio output (8 channels) aAudio[] init 8 ;decode B format for 8 channel circle loudspeaker setup aAudio bformdec1 4, aBform ; write audio out fout S_sound, 18, aAudio endin </CsInstruments> <CsScore> i 1 0 8 i 2 8 8 e </CsScore> </CsoundSynthesizer>