<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 lowpass2.wav -W ;;; for file output any platform </CsOptions> <CsInstruments> /* Written by Sean Costello */ ; Orchestra file for resonant filter sweep of a sawtooth-like waveform. sr = 44100 kr = 2205 ksmps = 20 nchnls = 1 instr 1 idur = p3 ifreq = p4 iamp = p5 * .5 iharms = (sr*.4) / ifreq ; Sawtooth-like waveform asig gbuzz 1, ifreq, iharms, 1, .9, 1 ; Envelope to control filter cutoff kfreq linseg 1, idur * 0.5, 5000, idur * 0.5, 1 afilt lowpass2 asig,kfreq, 30 ; Simple amplitude envelope kenv linseg 0, .1, iamp, idur -.2, iamp, .1, 0 out afilt * kenv endin </CsInstruments> <CsScore> /* Written by Sean Costello */ f1 0 8192 9 1 1 .25 i1 0 5 100 1000 i1 5 5 200 1000 e </CsScore> </CsoundSynthesizer>