SuperCollider CLASSES

LFDNoise0

Dynamic step noise
Inherits from: LFNoise0 : UGen : AbstractFunction : Object

Description

Like LFNoise0, it generates random values at a rate given by the freq argument, with two differences:

If you don't need very high or very low freqs, or use fixed freqs, LFNoise0 is more efficient.

Class Methods

*ar (freq: 500, mul: 1, add: 0)

From superclass: LFNoise0

*kr (freq: 500, mul: 1, add: 0)

From superclass: LFNoise0

Arguments:

freq

Approximate rate at which to generate random values.

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

// try wiggling mouse quickly;
// LFNoise frequently seems stuck, LFDNoise changes smoothly.

{ LFNoise0.ar(MouseX.kr(0.1, 1000, 1), 0.1)  }.play

{ LFDNoise0.ar(MouseX.kr(0.1, 1000, 1), 0.1)  }.play

// silent for 2 secs before going up in freq

{ LFNoise0.ar(XLine.kr(0.5, 10000, 3), 0.1) }.scope;

{ LFDNoise0.ar(XLine.kr(0.5, 10000, 3), 0.1) }.scope;


// LFNoise quantizes time steps at high freqs, LFDNoise does not:

{ LFNoise0.ar(XLine.kr(1000, 20000, 10), 0.1) }.scope;

{ LFDNoise0.ar(XLine.kr(1000, 20000, 10), 0.1) }.scope;

{ LFNoise2.ar(1000, 0.25) }.play;
[1] - LFNoise0 , LFNoise1 and LFNoise2 quantize to the nearest integer division of the samplerate, and they poll the freqargument only when scheduled; thus they often seem to hang when freqs get very low.