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 ; Audio out Audio in No messages -odac -iadc -d ;;;RT audio I/O </CsOptions> <CsInstruments> ; Required settings for WebAudio: sr = 48000 ksmps = 128 nchnls = 2 nchnls_i = 1 sr = 44100 ksmps = 100 nchnls = 2 giElem init 13 giOutTab ftgen 1,0,128, 2, 0 giFreqTab ftgen 2,0,128,-7, 1,giElem, giElem+1 giSine ftgen 3,0,256,10, 1 FLpanel "This Panel contains a Slider Bank",500,400 FLslidBnk "mod1@mod2@mod3@amp@freq1@freq2@freq3@freqPo", giElem, giOutTab, 360, 600, 100, 10 FLpanel_end FLrun instr 1 kout1 init 0 kout2 init 0 kout3 init 0 kout4 init 0 kout5 init 0 kout6 init 0 kout7 init 0 kout8 init 0 vtable1k giOutTab, kout1 , kout2, kout3, kout4, kout5 , kout6, kout7, kout8 kmodindex1= 2 * db(kout1 * 80 ) kmodindex2= 2 * db(kout2 * 80 ) kmodindex3= 2 * db(kout3 * 80 ) kamp = 50 * db(kout4 * 70 ) kfreq1 = 1.1 * octave(kout5 * 10) kfreq2 = 1.1 * octave(kout6 * 10) kfreq3 = 1.1 * octave(kout7 * 10) kfreq4 = 30 * octave(kout8 * 8) amod1 oscili kmodindex1, kfreq1, giSine amod2 oscili kmodindex2, kfreq2, giSine amod3 oscili kmodindex3, kfreq3, giSine aout oscili kamp, kfreq4+amod1+amod2+amod3, giSine outs aout, aout endin </CsInstruments> <CsScore> i1 0 3600 f0 3600 </CsScore> </CsoundSynthesizer>