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 --midi-key-cps=4 --midi-velocity-amp=5 ;;;realtime audio out and realtime midi in, midi key cps is routed to p4 and velocity to p5 ; For Non-realtime ouput leave only the line below: ; -o midic21.wav -W ;;; for file output any platform </CsOptions> <CsInstruments> ; Required settings for WebAudio: sr = 48000 ksmps = 128 nchnls = 2 nchnls_i = 1 ; by tgrey - 2020 ; sr = 44100 ; ksmps = 32 ; nchnls = 2 0dbfs = 1 instr 1 ; This example expects MIDI controller input on channel 1 ; run, play a note and move your midi controllers 1, 7, and 10 to see results ictlno1= 1 ; = cc #1 midi mod wheel (course tuning) ictlno2= 7 ; = cc #7 midi volume (fine tuning) ictlno3= 10 ; = cc #10 midi pan (extremely fine tuning) ; max range is 4 octaves: (2^4) = 16 imax = 16 ; read all 3 controllers, scaling them between 1 and imax kTune midic21 ictlno1, ictlno2, ictlno3, 1, imax printk2 kTune ; generate tones asig oscili p5, p4*kTune aref oscili p5, p4 ; combine detuned tone and reference tone ; creates a beat effect from the detune asig=(asig+aref)*.5 outs asig, asig endin </CsInstruments> <CsScore> ; run for 60 seconds f0 60 e </CsScore> </CsoundSynthesizer>