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 opcode_f.wav -W ;;; for file output any platform </CsOptions> <CsInstruments> ; Required settings for WebAudio: sr = 48000 ksmps = 128 nchnls = 2 nchnls_i = 1 ; sr = 44100 ; ksmps = 32 0dbfs = 1 ; nchnls = 2 ; example by Luis Salgueiro and joachim heintz opcode Transpose, a, fk ; transpose a monophonic input signal through FFT. fsig, kInterval xin fScaled pvscale fsig, semitone(kInterval) aTransposed pvsynth fScaled xout aTransposed endop opcode Stretch,f,ik iTab, kSpeed xin fStretch pvstanal kSpeed, 1, 1, iTab xout fStretch endop giFox ftgen 0, 0, 0, 1, "fox.wav", 0, 0, 0 instr 1 aSnd diskin2 "fox.wav" fSnd pvsanal aSnd, 1024, 256, 1024, 1 aTransposed Transpose fSnd, p4 ; p4 = transposition in semitones outall aTransposed/2 endin instr 2 fStretch Stretch giFox, transeg:k(1,p3,-3,0) aStretch pvsynth fStretch outall aStretch endin </CsInstruments> <CsScore> i1 0 3 0 i1 . . 7 i1 . . 12 i2 4 8 e </CsScore> </CsoundSynthesizer>