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 pvsfilter.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 ;; example written by joachim heintz 2009 giSine ftgen 0, 0, 4096, 10, 1 giBell ftgen 0, 0, 4096, 9, .56, 1, 0, .57, .67, 0, .92, 1.8, 0, .93, 1.8, 0, 1.19, 2.67, 0, 1.7, 1.67, 0, 2, 1.46, 0, 2.74, 1.33, 0, 3, 1.33, 0, 3.76, 1, 0, 4.07, 1.33, 0; bell-like (after Risset) instr 1 ipermut = p4 ; 1 = change order of soundfiles ifftsize = 1024 ioverlap = ifftsize / 4 iwinsize = ifftsize iwinshape = 1 ; von-Hann window Sfile1 = "fox.wav" ain1 soundin Sfile1 kfreq randomi 200, 300, 3 ain2 oscili .2, kfreq, giBell ;ain2 oscili .2, kfreq, giSine; try also this fftin1 pvsanal ain1, ifftsize, ioverlap, iwinsize, iwinshape; fft-analysis of file 1 fftin2 pvsanal ain2, ifftsize, ioverlap, iwinsize, iwinshape; fft-analysis of file 2 if ipermut == 1 then fcross pvsfilter fftin2, fftin1, 1 else fcross pvsfilter fftin1, fftin2, 1 endif aout pvsynth fcross outs aout * 30, aout * 30 endin </CsInstruments> <CsScore> i 1 0 2.757 0; frequencies from fox.wav, amplitudes multiplied by amplitudes of giBell i 1 3 2.757 1; frequencies from giBell, amplitudes multiplied by amplitudes of fox.wav e </CsScore> </CsoundSynthesizer>