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 centroid.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 giSine ftgen 0, 0, 16384, 10, 1 instr 1 ktrig init 1 ;calculate centroid a1 oscil3 0.5, p4, giSine ;of the sine wave k1 centroid a1, ktrig, 16384 asig oscil3 0.5, k1, giSine printk2 k1 ;print & compare: outs a1, asig ;left = original, right = centroid signal endin </CsInstruments> <CsScore> i1 0 2 20 i1 + 2 200 i1 + 2 2000 e </CsScore> </CsoundSynthesizer>