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 -odac ;;;realtime audio out ;-iadc ;;;uncomment -iadc if realtime audio input is needed too ; For Non-realtime ouput leave only the line below: ; -o lpshold.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 = 2 0dbfs = 1 instr 1 kfrq init p4 ; frequency of the loop ifrac = p5 ; fraction of frequency at which to force retrigger ipan = p6 ; pan position ktrig metro kfrq * ifrac ; trigger to force restart the loop iphs = 0 ; initial phase of the loop ; a loop of midi note numbers: note duration etc... knote lpshold kfrq, ktrig, iphs, 61, 0.0625, 60, 0.9375, 61, 1, 58, 1, \ 63, 2, 65, 3 aenv linseg 0,0.01,1,p3-0.11,1,0.1,0 ; amplitude envelope krnd rspline -0.05,0.05,0.5,1 ; random detune asig gbuzz 0.2*aenv, cpsmidinn(knote+krnd), 30, 1, 0.5, 1 outs asig*ipan, asig*(1-ipan) endin </CsInstruments> <CsScore> ; cosine wave. f 1 0 16384 11 1 ; 3 layers of the loop are played, each at a different speed, ; - with different retriggering rate, and pan location. i 1 0 60 0.5 [8/10] 0.5 i 1 0 60 0.375 [8/11] 0.1 i 1 0 60 0.25 [8/13] 0.9 e </CsScore> </CsoundSynthesizer>