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 ;;;realtime audio out ;-iadc ;;;uncomment -iadc if realtime audio input is needed too ; For Non-realtime ouput leave only the line below: ; -o sqrt.wav -W ;;; for file output any platform </CsOptions> <CsInstruments> ; Required settings for WebAudio: sr = 48000 ksmps = 128 nchnls = 2 nchnls_i = 1 ;################################################# 0dbfs = 1.1 ; nchnls = 2 ; ksmps = 100 ; aSyncin, FMod for instr 2 gafmod init 0 gasync init 0 ; Modulator squinewave instr 1 ; freq start, end acps line p4, p3, p5 ; shape start, end aclip line p6, p3, p7 askew line p8, p3, p9 ; ar, async squinewave aFreq , aclip, askew [, asyncin, iMinSweep, iphase] aout1, gasync squinewave cpsoct(acps), aclip, askew, 0, 17 outs1 aout1 gaFMod = aout1 endin ; squinewave using gaFMod and gasync input from i1 instr 2 ; freq & shape start, end acps line p4, p3, p5 aclip line p6, p3, p7 askew line p8, p3, p9 aFMindex line p10, p3, p11 asyncin = gasync * p12 afreq = cpsoct(acps + aFMindex * gaFMod) ; ar squinewave aFreq, aclip, askew [, asyncin, iMinSweep, iphase] aout2 squinewave afreq , aclip, askew, asyncin outs2 aout2 endin </CsInstruments> <CsScore> ; First part instr 1 hardsyncs instr 2 (p12) ; p4=fund clip skew i1 0 1. 6.11 6.06 0 1 -1 +1 i1 + 1. pp5 2.03 pp7 0 pp9 0 i1 + 1. pp5 7.11 pp7 .8 pp9 -.8 i1 + 2. pp5 8.11 pp7 .2 pp9 1 i1 + .5 pp5 6.05 pp7 .5 pp9 -.6 i1 + 2.5 pp5 6.05 pp7 1 pp9 1 ; p4=fund clip skew p10=FM p12=sync i2 0 .5 1.08 2.06 0 .3 -.5 +.5 0 0 1 i2 + .5 pp5 4.03 pp7 .5 pp9 -.6 pp11 . . i2 + .5 pp5 5.11 pp7 1 pp9 .5 pp11 . . i2 + .5 pp5 6.01 pp7 .8 pp9 -.5 pp11 . . i2 + .5 pp5 2.11 pp7 .1 pp9 .3 pp11 . . i2 + .5 pp5 3.11 pp7 .8 pp9 -.8 pp11 . . i2 + 2. pp5 4.00 pp7 0 pp9 0 pp11 . . i2 + 3. pp5 3.00 pp7 .3 pp9 1 pp11 . . s ; End section, reset clock ; Second part instr 1 outputs FM for instr 2 (p10, p11) ; p4=fund clip skew i1 0 1. 6.11 6.06 0 1 -.3 +.3 i1 + 1. pp5 2.03 pp7 0 pp9 0 i1 + 1. pp5 7.11 pp7 .8 pp9 .8 i1 + 2. pp5 8.11 pp7 0 pp9 .4 i1 + .5 pp5 6.05 pp7 .5 pp9 -.6 i1 + 2.5 pp5 6.05 pp7 .4 pp9 .8 ; p4=fund clip skew p10=FM p12=sync i2 0 .5 8.08 6.06 0 .3 -.5 +.5 0 3 0 i2 + .5 pp5 6.03 pp7 .5 pp9 -.6 pp11 2 . i2 + .5 pp5 5.11 pp7 1 pp9 .5 pp11 < . i2 + .5 pp5 6.01 pp7 .8 pp9 -.5 pp11 1 . i2 + .5 pp5 5.11 pp7 .5 pp9 .3 pp11 < . i2 + .5 pp5 9.04 pp7 .1 pp9 -.3 pp11 .5 . i2 + 2. pp5 8.11 pp7 .4 pp9 .4 pp11 2 . i2 + 3. pp5 8.11 pp7 0 pp9 0 pp11 3 . e </CsScore> </CsoundSynthesizer>