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 tbvcf.wav -W ;;; for file output any platform </CsOptions> <CsInstruments> ; Required settings for WebAudio: sr = 48000 ksmps = 128 nchnls = 2 nchnls_i = 1 ;--------------------------------------------------------- ; TBVCF Test ; Coded by Hans Mikelson December, 2000 ;--------------------------------------------------------- ; sr = 44100 ; Sample rate ; ksmps = 10 ; Samples/Kontrol period ; nchnls = 2 ; Normal stereo 0dbfs = 1 instr 10 idur = p3 ; Duration iamp = p4 ; Amplitude ifqc = cpspch(p5) ; Pitch to frequency ipanl = sqrt(p6) ; Pan left ipanr = sqrt(1-p6) ; Pan right iq = p7 idist = p8 iasym = p9 kdclck linseg 0, .002, 0.9, idur-.004, 0.9, .002, 0 ; Declick envelope kfco expseg 10000, idur, 1000 ; Frequency envelope ax vco 1, ifqc, 2, 0.5 ; Square wave ay tbvcf ax, kfco, iq, idist, iasym ; TB-VCF ay buthp ay/1, 100 ; Hi-pass outs ay*iamp*ipanl*kdclck, ay*iamp*ipanr*kdclck endin </CsInstruments> <CsScore> f1 0 65536 10 1 ; TeeBee Test ; Sta Dur Amp Pitch Pan Q Dist1 Asym i10 0 0.2 0.5 7.00 .5 0.0 2.0 0.0 i10 0.3 0.2 0.5 7.00 .5 0.8 2.0 0.0 i10 0.6 0.2 0.5 7.00 .5 1.6 2.0 0.0 i10 0.9 0.2 0.5 7.00 .5 1.7 2.0 0.0 i10 1.2 0.2 0.5 7.00 .5 1.8 2.0 0.0 i10 1.8 0.2 0.5 7.00 .5 0.0 2.0 0.25 i10 2.1 0.2 0.5 7.00 .5 0.8 2.0 0.25 i10 2.4 0.2 0.5 7.00 .5 1.6 2.0 0.25 i10 2.7 0.2 0.5 7.00 .5 1.8 2.0 0.25 i10 3.0 0.2 0.5 7.00 .5 1.9 2.0 0.25 i10 3.3 0.2 0.5 7.00 .5 2.0 2.0 0.25 i10 3.6 0.2 0.5 7.00 .5 0.0 2.0 0.5 i10 3.9 0.2 0.5 7.00 .5 0.8 2.0 0.5 i10 4.2 0.2 0.5 7.00 .5 1.6 2.0 0.5 i10 4.5 0.2 0.5 7.00 .5 1.8 2.0 0.5 i10 4.8 0.2 0.5 7.00 .5 1.9 2.0 0.5 i10 5.1 0.2 0.5 7.00 .5 2.0 2.0 0.5 i10 5.4 0.2 0.5 7.00 .5 0.0 2.0 0.75 i10 5.7 0.2 0.5 7.00 .5 0.8 2.0 0.75 i10 6.0 0.2 0.5 7.00 .5 1.6 2.0 0.75 i10 6.3 0.2 0.5 7.00 .5 1.8 2.0 0.75 i10 6.6 0.2 0.5 7.00 .5 1.9 2.0 0.75 i10 6.9 0.2 0.5 7.00 .5 2.0 2.0 0.75 i10 7.2 0.2 0.5 7.00 .5 0.0 2.0 1.0 i10 7.5 0.2 0.5 7.00 .5 0.8 2.0 1.0 i10 7.8 0.2 0.5 7.00 .5 1.6 2.0 1.0 i10 8.1 0.2 0.5 7.00 .5 1.8 2.0 1.0 i10 8.4 0.2 0.5 7.00 .5 1.9 2.0 1.0 i10 8.7 0.2 0.5 7.00 .5 2.0 2.0 1.0 e </CsScore> </CsoundSynthesizer>