sc_phasor — A resettable linear ramp between two levels (renamed as trigphasor)
Plugin opcode in scugens.
A resettable linear ramp between two levels. Port of Supercollider's Phasor. DEPRECATED (renamed as trigphasor, )
aindex sc_phasor xtrig, xrate, kstart, kend [, kresetPos]
kindex sc_phasor xtrig, xrate, kstart, kend [, kresetPos]
Phasor is a linear ramp between kstart and kend values. When its trigger input crosses from non-positive to positive, sc_phasor's output will jump to its reset position (or to kstartif no reset value was given). Upon reaching the end of its ramp, sc_phasor will wrap back to its start.
If kresetPos is specified, this value will be used to jump to after a trigger. Otherwise, a trigger will set the position back to kstart
If one wants Phasor to output a signal with frequency freq oscillating between start and end, then the rate should be:
(end - start) * freq / sr
Here is an example of the sc_phasor opcode. It uses the file sc_phasor.csd.
Example 1324. Example of the sc_phasor opcode.
See the sections Real-time Audio and Command Line Flags for more information on using command line flags.
<CsoundSynthesizer> <CsOptions> </CsOptions> <CsInstruments> sr = 44100 ksmps = 128 nchnls = 2 0dbfs = 1.0 instr 1 krate linseg 1, p3, 40 ktrig metro krate kx sc_phasor ktrig, krate/kr, 0, 1 asine oscili 0.2, kx*500+500 outch 1, asine endin instr 2 krate linseg 1, p3, 40 atrig = mpulse(1, 1/krate) ax sc_phasor atrig, krate/sr, 0, 1 asine oscili 0.2, ax*500+500 outch 2, asine endin </CsInstruments> <CsScore> i1 0 20 i2 0 20 </CsScore> </CsoundSynthesizer>