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<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 turnoff2.wav -W ;;; for file output any platform </CsOptions> <CsInstruments> ; Required settings for WebAudio: sr = 48000 ksmps = 128 nchnls = 2 nchnls_i = 1 ; sr = 44100 ;samples per second for sound ; ksmps = 32 ; nchnls = 2 0dbfs = 1 ; example by Lou Cohen gisine ftgen 1, 0, 131073, 9, 1, 1, 0 ;single sine tone ;----------------------------------------- instr 2 ;start ktrigger init 0 if (ktrigger = 0) then kMultiple = 1.1 kHz = 440 kAmp = (0dbfs/10) ;startup four instances of instrument 200 event "i", 200, 0, 3000, kAmp, kHz kAmp = kAmp * 0.75 kHz = kHz * kMultiple event "i", 200, 0, 3000, kAmp, kHz kAmp = kAmp * 0.75 kHz = kHz * kMultiple event "i", 200, 0, 3000, kAmp, kHz kAmp = kAmp * 0.75 kHz = kHz * kMultiple event "i", 200, 0, 3000, kAmp, kHz kAmp = kAmp * 0.75 kHz = kHz * kMultiple ktrigger = 1 endif endin ;--------------------------------------------- instr 3 ;after 10 seconds, turn off the instruments ktrigger init 1 if (ktrigger==1) then turnoff2 200, 1, 1 ;turn off must recently started instrument instance kactive active 200 ;find out how many are still active printk2 kactive ;print mainly to show progress turnoff2 200, 0, 1 ;turn off all the rest of the instruments kactive active 200 ;find out how many are still active printk2 kactive, 10 ;print to show progress endif endin ;---------------------------------------------------- instr 200 ;play the tone kEnv linen 1, 0.1, p3, 0.1 ar oscil kEnv*p4, p5, 1 outs ar, ar print p4, p5 endin </CsInstruments> <CsScore> i2 0 0.1 i3 10 0.1 </CsScore> </CsoundSynthesizer>