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 -Ma --midi-key=4 --midi-velocity-amp=5 -m0 ;;;realtime audio out and midi in ;-iadc ;;;uncomment -iadc if realtime audio input is needed too ; For Non-realtime ouput leave only the line below: ; -o %.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 giScale ftgen 1, 0, -12, -2, 0, -34, -7, 10, -14, 3, -21, -3, -27, -10, 7, -17 ;12 note scale with detuned keys instr 1 ikey = p4 ivel = p5 indx = ikey % 12 ;work on the twelftone scale icent tab_i indx, giScale ;load the scale ifreqeq = cpsmidinn(ikey) ifreq = ifreqeq * cent(icent) ;change frequency by cents from table prints "Key %d modulus 12 = %d. ", ikey, indx prints "Equal-tempered frequency of this key = %f,", ifreqeq prints " but here with cent deviation %d = %f%n", icent, ifreq asig vco2 ivel*.5, ifreq outs asig, asig endin </CsInstruments> <CsScore> f 0 60 ;run for 60 seconds e </CsScore> </CsoundSynthesizer>