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 ; For Non-realtime ouput leave only the line below: ; -o FLtabs.wav -W ;;; for file output any platform </CsOptions> <CsInstruments> ; Required settings for WebAudio: sr = 48000 ksmps = 128 nchnls = 2 nchnls_i = 1 ; A single oscillator with frequency, amplitude and ; panning controls on separate file tab cards ; sr = 44100 ; kr = 441 ; ksmps = 100 ; nchnls = 2 FLpanel "Tabs", 300, 350, 100, 100 itabswidth = 280 itabsheight = 330 ix = 5 iy = 5 FLtabs itabswidth,itabsheight, ix,iy itab1width = 280 itab1height = 300 itab1x = 10 itab1y = 40 FLgroup "Tab 1", itab1width, itab1height, itab1x, itab1y gkfreq, i1 FLknob "Frequency", 200, 5000, -1, 1, -1, 70, 70, 130 FLsetVal_i 400, i1 FLgroupEnd itab2width = 280 itab2height = 300 itab2x = 10 itab2y = 40 FLgroup "Tab 2", itab2width, itab2height, itab2x, itab2y gkamp, i2 FLknob "Amplitude", 0, 15000, 0, 1, -1, 70, 70, 130 FLsetVal_i 15000, i2 FLgroupEnd itab3width = 280 itab3height = 300 itab3x = 10 itab3y = 40 FLgroup "Tab 3", itab3width, itab3height, itab3x, itab3y gkpan, i3 FLknob "Pan position", 0, 1, 0, 1, -1, 70, 70, 130 FLsetVal_i 0.5, i3 FLgroupEnd FLtabsEnd FLpanelEnd ; Run the widget thread! FLrun instr 1 ifn = 1 asig oscili gkamp, gkfreq, ifn outs asig*(1-gkpan), asig*gkpan endin </CsInstruments> <CsScore> ; Function table that defines a single cycle ; of a sine wave. f 1 0 1024 10 1 ; Instrument 1 will play a note for 1 hour. i 1 0 3600 e </CsScore> </CsoundSynthesizer>