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 ; kr=441 ; ksmps=100 ; nchnls=2 ; Example by Gabriel Maldonado FLpanel "Move the mouse inside this panel to hear the effect",400,400 FLpanel_end FLrun instr 1 k1, k2, kinside FLxyin 50, 1000, 50, 1000, 100, 300, 50, 250, -2,-3 ;if k1 <= 50 || k1 >=5000 || k2 <=100 || k2 >= 8000 kgoto end ; if cursor is outside bounds, then don't play!!! a1 oscili 3000, k1, 1 a2 oscili 3000, k2, 1 outs a1,a2 printk2 k1 printk2 k2, 10 printk2 kinside, 20 end: endin </CsInstruments> <CsScore> f1 0 1024 10 1 f2 0 17 19 1 1 90 1 f3 0 17 19 2 1 90 1 i1 0 3600 </CsScore> </CsoundSynthesizer>