SuperCollider CLASSES

LFPar

Parabolic oscillator
Inherits from: LFSaw : PureUGen : UGen : AbstractFunction : Object

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.

Class Methods

*ar (freq: 440, iphase: 0, mul: 1, add: 0)

From superclass: LFSaw

*kr (freq: 440, iphase: 0, mul: 1, add: 0)

From superclass: LFSaw

Arguments:

freq

Frequency in Hertz.

iphase

Initial phase in cycles ( 0..1 ).

mul

Output will be multiplied by this value.

add

This value will be added to the output.

Inherited class methods

Instance Methods

Inherited instance methods

Examples

// 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