<CsoundSynthesizer> <CsOptions> ; Select audio/midi flags here according to platform -odac ;;;RT audio out ;-iadc ;;;uncomment -iadc if RT audio input is needed too ; For Non-realtime ouput leave only the line below: ; -o clfilt_lowpass.wav -W ;;; for file output any platform </CsOptions> <CsInstruments> sr = 44100 ksmps = 32 nchnls = 2 0dbfs = 1 instr 1 ; white noise asig rand 0.5 outs asig, asig endin instr 2 ; filtered noise asig rand 0.9 ; Lowpass filter signal asig with a ; 10-pole Butterworth at 500 Hz. a1 clfilt asig, 500, 0, 10 outs a1, a1 endin </CsInstruments> <CsScore> i 1 0 2 i 2 2 2 e </CsScore> </CsoundSynthesizer>