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 nestedap.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 = 2 instr 5 insnd = p4 gasig diskin2 insnd, 1 endin instr 10 imax = 1 idel1 = p4/1000 igain1 = p5 idel2 = p6/1000 igain2 = p7 idel3 = p8/1000 igain3 = p9 idel4 = p10/1000 igain4 = p11 idel5 = p12/1000 igain5 = p13 idel6 = p14/1000 igain6 = p15 afdbk init 0 aout1 nestedap gasig+afdbk*.4, 3, imax, idel1, igain1, idel2, igain2, idel3, igain3 aout2 nestedap aout1, 2, imax, idel4, igain4, idel5, igain5 aout nestedap aout2, 1, imax, idel6, igain6 afdbk butterlp aout, 1000 outs gasig+(aout+aout1)/2, gasig-(aout+aout1)/2 gasig = 0 endin </CsInstruments> <CsScore> f1 0 8192 10 1 ; Diskin ; Sta Dur Soundin i5 0 3 "beats.wav" ; Reverb ; St Dur Del1 Gn1 Del2 Gn2 Del3 Gn3 Del4 Gn4 Del5 Gn5 Del6 Gn6 i10 0 4 97 .11 23 .07 43 .09 72 .2 53 .2 119 .3 e </CsScore> </CsoundSynthesizer>