83 lines
1.8 KiB
Racket
83 lines
1.8 KiB
Racket
#lang scribble/manual
|
|
@(require (for-label racket))
|
|
|
|
@title{LFDClipNoise}
|
|
Dynamic clipped noise@section{related}
|
|
Classes/LFClipNoise, Classes/LFDNoise0, Classes/LFDNoise1, Classes/LFDNoise3, Classes/LFNoise0, Classes/LFNoise1, Classes/LFNoise2
|
|
@section{categories}
|
|
UGens>Generators>Stochastic
|
|
|
|
|
|
@section{description}
|
|
|
|
|
|
Like link::Classes/LFClipNoise::, it generates the values -1 or +1 at a rate given
|
|
by the
|
|
@racketblock[freq:: argument, with two differences:
|
|
]
|
|
@section{list}
|
|
|
|
## no time quantization
|
|
## fast recovery from low freq values @section{footnote}
|
|
|
|
link::Classes/LFClipNoise:: , as well as link::Classes/LFNoise0:: ,
|
|
link::Classes/LFNoise1:: and link::Classes/LFNoise2:: quantize to the
|
|
nearest integer division of the samplerate, and they poll the
|
|
|
|
@racketblock[freq:: argument only when scheduled; thus they often
|
|
seem to hang when freqs get very low.
|
|
::
|
|
::
|
|
|
|
If you don't need very high or very low freqs, or use fixed freqs,
|
|
link::Classes/LFDClipNoise:: is more efficient.
|
|
|
|
|
|
]
|
|
@section{classmethods}
|
|
|
|
|
|
@section{method}
|
|
ar, kr
|
|
|
|
@section{argument}
|
|
freq
|
|
Approximate rate at which to generate random values.
|
|
|
|
@section{argument}
|
|
mul
|
|
Output will be multiplied by this value.
|
|
|
|
@section{argument}
|
|
add
|
|
This value will be added to the output.
|
|
|
|
@section{Examples}
|
|
|
|
|
|
|
|
@racketblock[
|
|
// try wiggling the mouse quickly;
|
|
// LFNoise frequently seems stuck, LFDNoise changes smoothly.
|
|
|
|
{ LFClipNoise.ar(MouseX.kr(0.1, 1000, 1), 0.1) }.play
|
|
|
|
{ LFDClipNoise.ar(MouseX.kr(0.1, 1000, 1), 0.1) }.play
|
|
|
|
// silent for 2 secs before going up in freq
|
|
|
|
{ LFClipNoise.ar(XLine.kr(0.5, 10000, 3), 0.1) }.scope;
|
|
|
|
{ LFDClipNoise.ar(XLine.kr(0.5, 10000, 3), 0.1) }.scope;
|
|
|
|
|
|
// LFNoise quantizes time steps at high freqs, LFDNoise does not:
|
|
|
|
{ LFClipNoise.ar(XLine.kr(1000, 20000, 10), 0.1) }.scope;
|
|
|
|
{ LFDClipNoise.ar(XLine.kr(1000, 20000, 10), 0.1) }.scope;
|
|
::
|
|
|
|
]
|
|
|
|
|