gausstrig — Random impulses around a certain frequency.
ares gausstrig kamp, kcps, kdev [, imode] [, ifrst1]
kres gausstrig kamp, kcps, kdev [, imode] [, ifrst1]
imode (optional, default=0) -- imode > 0 means better frequency modulation. If the frequency changes, the delay before the next impulse is calculed again. With the default mode we have the classic behavior of the GaussTrig ugen in SuperCollider, where the frequency modulation is bypassed during the delay time that precedes the next impulse.
ifrst1 (optional, default=0) -- ifrst1 > 0 changes the original behavior of the GuassTrig ugen. By default, it always generates an impulse in the very beginning. Otherwise, the first impulse appearance is random and depends on kcps and kdev parameters.
kamp -- amplitude.
kcps -- the mean frequency over which random impulses are distributed.
kdev -- random deviation from mean (0 <= dev < 1).
Here is an example of the gausstrig opcode. Play gausstrig.csd
Example 410. Example of the gausstrig 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 oscil.wav -W ;;; for file output any platform </CsOptions> <CsInstruments> sr = 44100 ksmps = 32 nchnls = 2 0dbfs = 1 instr 1 kdev line 0, p3, 0.9 seed 20120125 aimp gausstrig 0.5, 10, kdev aenv filter2 aimp, 1, 1, 0.993, 0.993 anoi fractalnoise 0.2, 1.7 al = anoi*aenv ar delay al, 0.02 outs al, ar endin </CsInstruments> <CsScore> i1 0 10 e </CsScore> </CsoundSynthesizer>
Here is an example of the gausstrig opcode with imode = 1. Play gausstrig-2.csd
Example 411. Example of the gausstrig opcode with imode = 1.
<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 oscil.wav -W ;;; for file output any platform </CsOptions> <CsInstruments> sr = 44100 ksmps = 32 nchnls = 2 0dbfs = 1 instr 1 kfrq0 oscil 8, 0.25, 1 ktrig metro 1 kfrq samphold kfrq0+8, ktrig seed 20120125 aimp gausstrig 0.5, kfrq, 0.5, 1 aenv filter2 aimp, 1, 1, 0.993, 0.993 anoi fractalnoise 0.2, 1.7 al = anoi*aenv ar delay al, 0.02 outs al, ar endin </CsInstruments> <CsScore> f1 0 8192 10 1 i1 0 16 e </CsScore> </CsoundSynthesizer>