sin — Performs a sine function.
Here is an example of the sin opcode. It uses the file sin.csd.
Example 977. Example of the sin opcode.
See the sections Real-time Audio and Command Line Flags for more information on using command line flags.
<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 sin.wav -W ;;; for file output any platform </CsOptions> <CsInstruments> sr = 44100 ksmps = 32 nchnls = 2 0dbfs = 1 instr 1 isin1 = sin(0) ;sine of 0 is 0 isin2 = sin($M_PI_2) ;sine of pi/2 (1.5707...) is 1 isin3 = sin($M_PI) ;sine of pi (3.1415...) is 0 isin4 = sin($M_PI_2 * 3) ;sine of 3/2pi (4.7123...) is -1 isin5 = sin($M_PI * 2) ;sine of 2pi (6.2831...) is 0 isin6 = sin($M_PI * 4) ;sine of 4pi is also 0 print isin1, isin2, isin3, isin4, isin5, isin6 endin instr 2 ;sin used in panning, after an example from Hans Mikelson aout vco2 0.8, 220 ; sawtooth kpan linseg p4, p3, p5 ;0 = left, 1 = right kpan = kpan*$M_PI_2 ;range 0-1 becomes 0-pi/2 kpanl = cos(kpan) kpanr = sin(kpan) outs aout*kpanl, aout*kpanr endin </CsInstruments> <CsScore> i 1 0 0 i 2 0 5 0 1 ;move left to right i 2 5 5 1 0 ;move right to left e </CsScore> </CsoundSynthesizer>
Its output should include a line like this:
instr 1: isin1 = 0.000 isin2 = 1.000 isin3 = 0.000 isin4 = -1.000 isin5 = -0.000 isin6 = 0.000