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 -m0 --limiter=.95 ;;;realtime audio out, with limiter protection ; For Non-realtime ouput leave only the line below: ; -o hetro.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 ; by Menno Knevel 2021 gilen filelen "fox.wav" ; get length of soundfile ; analyze sound file and output result to 3 hetro files ires1 system_i 1,{{ hetro fox.wav fox1.het }} ; default settings ires2 system_i 1,{{ hetro -f250 fox.wav fox2.het }} ; high starting frequency ires3 system_i 1,{{ hetro -f100 -h180 fox.wav fox3.het }}; up to 18kHz! instr 1 ; untreated signal asig diskin2 "fox.wav", 1 prints "\n---***YOU NOW HEAR THE UNTREATED SOUND SAMPLE***---\n" prints "---*duration of soundfile is %f seconds*---\\n",gilen outs asig, asig endin instr 2 prints "\n---***YOU NOW HEAR THE RESULT OF THIS ANALYZED FILE:***---\n" asig adsyn 1, 1, 1, p4 outs asig, asig endin </CsInstruments> <CsScore> i1 0 2.76 ; original sample i2 5 2.76 "fox1.het" ; whole sentence i2 10 2.76 "fox2.het" ; whole sentence, but analyzed with different settings i2 15 2.76 "fox3.het" ; whole sentence, and again analyzed with different settings e </CsScore> </CsoundSynthesizer>