vps

Shapes a phase signal according to a two-dimensional vector.

Vector phase shaping modifies a phase input value by mapping an input, in the range [0, 1) according to a non-linear function consisting of two piecewise linear segments joined at an inflection point. This is defined by the vector [kd, kv], where kd is in the range [0, 1) and kv can have any value.

Syntax

avp vps aph,kd,kv

Performance

avp -- output phase.

aph -- input phase (as produced by phasor).

kd -- horizontal vector component.

aph -- vertical vector component.

Examples

Here is an example of the use of the vps opcode. It uses the file vps.csd.

<CsoundSynthesizer>
<CsOptions>
-o dac -d
</CsOptions>
<CsInstruments>
0dbfs = 1
nchnls=1
ksmps = 1

instr 1
 kd = oscili:k(0.5,2) + 0.5
 kv = oscili:k(0.5,1.5) + 0.5
 aph = vps(phasor(p5),kd,kv)
 asig = p4*tablei:a(aph,-1,1,0.25,1)
 out(linenr(asig,0.1,0.1,0.01))
endin

</CsInstruments>
<CsScore>

i 1 0 10 0.5 110 


</CsScore>
</CsoundSynthesizer>

See also

Phase Distortion

Credits

Author: Victor Lazzarini
July 2020