74 lines
1.3 KiB
Text
74 lines
1.3 KiB
Text
|
#lang scribble/manual
|
||
|
|
@(require (for-label racket))
|
||
|
|
|
||
|
|
@title{Lag}
|
||
|
|
Exponential lag@section{related}
|
||
|
|
Classes/Lag2, Classes/Lag3, Classes/VarLag, Classes/LagUD
|
||
|
|
@section{categories}
|
||
|
|
UGens>Filters>Linear
|
||
|
|
|
||
|
|
|
||
|
|
@section{description}
|
||
|
|
|
||
|
|
This is essentially the same as link::Classes/OnePole:: except that
|
||
|
|
instead of supplying the coefficient directly, it is calculated from a 60
|
||
|
|
dB lag time. This is the time required for the filter to converge to
|
||
|
|
within 0.01% of a value. This is useful for smoothing out control
|
||
|
|
signals.
|
||
|
|
|
||
|
|
For linear and other alternatives, see link::Classes/VarLag::.
|
||
|
|
|
||
|
|
@section{classmethods}
|
||
|
|
|
||
|
|
|
||
|
|
@section{method}
|
||
|
|
ar, kr
|
||
|
|
|
||
|
|
@section{argument}
|
||
|
|
in
|
||
|
|
|
||
|
|
The input signal.
|
||
|
|
|
||
|
|
|
||
|
|
@section{argument}
|
||
|
|
lagTime
|
||
|
|
|
||
|
|
60 dB lag time in seconds.
|
||
|
|
|
||
|
|
|
||
|
|
@section{argument}
|
||
|
|
mul
|
||
|
|
|
||
|
|
Output will be multiplied by this value.
|
||
|
|
|
||
|
|
|
||
|
|
@section{argument}
|
||
|
|
add
|
||
|
|
|
||
|
|
This value will be added to the output.
|
||
|
|
|
||
|
|
|
||
|
|
@section{Examples}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
@racketblock[
|
||
|
|
(
|
||
|
|
// used to lag pitch
|
||
|
|
{
|
||
|
|
SinOsc.ar( // sine wave
|
||
|
|
Lag.kr( // lag the modulator
|
||
|
|
LFPulse.kr(4, 0, 0.5, 50, 400), // frequency modulator
|
||
|
|
Line.kr(0, 1, 15) // modulate lag time
|
||
|
|
),
|
||
|
|
0, // phase
|
||
|
|
0.3 // sine amplitude
|
||
|
|
)
|
||
|
|
}.play
|
||
|
|
)
|
||
|
|
::
|
||
|
|
|
||
|
|
]
|
||
|
|
|
||
|
|
|