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 trandom.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 seed 0 ; every run time different values instr 1 kmin init 0 ;random number between 0 and 220 kmax init 220 ktrig = p4 k1 trandom ktrig, kmin, kmax printk2 k1 ;print when k1 changes asig poscil .4, 220+k1, 1 ;if triggered, add random values to frequency outs asig, asig endin </CsInstruments> <CsScore> f1 0 4096 10 1 i 1 0 2 0 ;not triggered i 1 + 2 1 ;triggered e </CsScore> </CsoundSynthesizer>