<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 reson.wav -W ;;; for file output any platform </CsOptions> <CsInstruments> ; Initialize the global variables. sr = 44100 kr = 4410 ksmps = 10 nchnls = 1 ; Instrument #1. instr 1 ; Generate a sine waveform. asine buzz 15000, 440, 3, 1 ; Vary the cut-off frequency from 220 to 1280. kcf line 220, p3, 1320 kbw init 20 ; Run the sine through a resonant filter. ares reson asine, kcf, kbw ; Give the filtered signal the same amplitude ; as the original signal. a1 balance ares, asine out a1 endin </CsInstruments> <CsScore> ; Table #1, an ordinary sine wave. f 1 0 16384 10 1 ; Play Instrument #1 for 4 seconds. i 1 0 4 e </CsScore> </CsoundSynthesizer>