80 lines
1.9 KiB
Text
80 lines
1.9 KiB
Text
|
class:: LFPar
|
||
|
|
summary:: Parabolic oscillator
|
||
|
|
related:: Classes/LFCub, Classes/LFPulse, Classes/LFSaw, Classes/LFTri
|
||
|
|
categories:: UGens>Generators>Deterministic
|
||
|
|
|
||
|
|
|
||
|
|
Description::
|
||
|
|
|
||
|
|
A sine-like shape made of two parabolas and the integral of a triangular wave. It has audible odd harmonics and is non-band-limited.
|
||
|
|
Output ranges from -1 to +1.
|
||
|
|
|
||
|
|
classmethods::
|
||
|
|
|
||
|
|
method::ar, kr
|
||
|
|
|
||
|
|
argument::freq
|
||
|
|
Frequency in Hertz.
|
||
|
|
|
||
|
|
argument::iphase
|
||
|
|
|
||
|
|
Initial phase in cycles ( 0..1 ).
|
||
|
|
|
||
|
|
|
||
|
|
argument::mul
|
||
|
|
Output will be multiplied by this value.
|
||
|
|
|
||
|
|
argument::add
|
||
|
|
This value will be added to the output.
|
||
|
|
|
||
|
|
Examples::
|
||
|
|
|
||
|
|
code::
|
||
|
|
// a plot
|
||
|
|
{ LFPar.ar(Line.kr(100, 800, 0.1)) }.plot(0.1);
|
||
|
|
|
||
|
|
// 440 Hz wave
|
||
|
|
{ LFPar.ar(440) * 0.1 }.play;
|
||
|
|
|
||
|
|
// modulating frequency:
|
||
|
|
{ LFPar.ar(XLine.kr(100, 2000, 10)) * 0.1 }.play;
|
||
|
|
|
||
|
|
// amplitude modulation:
|
||
|
|
{ LFPar.kr(XLine.kr(1, 200, 10)) * SinOsc.ar(440) * 0.1 }.play;
|
||
|
|
|
||
|
|
// used as both Oscillator and LFO:
|
||
|
|
{ LFPar.ar(LFPar.kr(3, 0.3, 200, 400)) * 0.1 }.play;
|
||
|
|
|
||
|
|
// used as phase modulator (behaves like a triangular modulator in FM):
|
||
|
|
// Compare:
|
||
|
|
{SinOsc.ar(440, LFPar.ar(1, 2, mul: 8pi))}.play
|
||
|
|
{SinOsc.ar(440 + LFTri.ar(1, mul: 8pi))}.play
|
||
|
|
|
||
|
|
|
||
|
|
// more examples:
|
||
|
|
|
||
|
|
{ LFPar.ar(LFPar.kr(LFPar.kr(0.2,0,8,10), 0, 400,800),0,0.1) }.play
|
||
|
|
{ LFPar.ar(LFPar.kr(0.2, 0, 400,800),0,0.1) }.play
|
||
|
|
{ LFPar.ar(800,0,0.1) }.play
|
||
|
|
{ LFPar.ar(XLine.kr(100,8000,30),0,0.1) }.play
|
||
|
|
|
||
|
|
|
||
|
|
// compare:
|
||
|
|
|
||
|
|
{ LFCub.ar(LFCub.kr(LFCub.kr(0.2,0,8,10),0, 400,800),0,0.1) }.play
|
||
|
|
{ LFCub.ar(LFCub.kr(0.2, 0, 400,800),0,0.1) }.play
|
||
|
|
{ LFCub.ar(800,0,0.1) }.play
|
||
|
|
{ LFCub.ar(XLine.kr(100,8000,30),0,0.1) }.play
|
||
|
|
|
||
|
|
{ SinOsc.ar(SinOsc.kr(SinOsc.kr(0.2,0,8,10),0, 400,800),0,0.1) }.play
|
||
|
|
{ SinOsc.ar(SinOsc.kr(0.2, 0, 400,800),0,0.1) }.play
|
||
|
|
{ SinOsc.ar(800,0,0.1) }.play
|
||
|
|
{ SinOsc.ar(XLine.kr(100,8000,30),0,0.1) }.play
|
||
|
|
|
||
|
|
{ LFTri.ar(LFTri.kr(LFTri.kr(0.2,0,8,10),0, 400,800),0,0.1) }.play
|
||
|
|
{ LFTri.ar(LFTri.kr(0.2, 0, 400,800),0,0.1) }.play
|
||
|
|
{ LFTri.ar(800,0,0.1) }.play
|
||
|
|
{ LFTri.ar(XLine.kr(100,8000,30),0,0.1) }.play
|
||
|
|
::
|
||
|
|
|