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.
; Select audio/midi flags here according to platform ; Audio out Audio in No messages -odac -iadc -d ;;;RT audio I/O ; For Non-realtime ouput leave only the line below: ; -o table.wav -W ;;; for file output any platform ; Required settings for WebAudio: sr = 48000 ksmps = 128 nchnls = 2 nchnls_i = 1 ; Initialize the global variables. ; sr = 44100 ; kr = 4410 ; ksmps = 10 ; nchnls = 1 ; Instrument #1. instr 1 ; Vary our index linearly from 0 to 1. kndx line 0, p3, 1 ; Read Table #1 with our index. ifn = 1 ixmode = 1 kfreq ptable kndx, ifn, ixmode ; Generate a sine waveform, use our table values ; to vary its frequency. a1 oscil 20000, kfreq, 2 out a1 endin ; Table #1, a line from 200 to 2,000. f 1 0 1025 -7 200 1024 2000 ; Table #2, a sine wave. f 2 0 16384 10 1 ; Play Instrument #1 for 2 seconds. i 1 0 2 e