45 lines
1.3 KiB
Text
45 lines
1.3 KiB
Text
class:: BAllPass
|
|
summary:: All Pass Filter
|
|
categories:: UGens>Filters>BEQSuite
|
|
related:: Classes/SOS, Classes/BLowPass, Classes/BLowPass4, Classes/BHiPass, Classes/BHiPass4, Classes/BPeakEQ, Classes/BLowShelf, Classes/BHiShelf, Classes/BBandPass, Classes/BBandStop
|
|
|
|
description::
|
|
The B equalization suite is based on the Second Order Section (link::Classes/SOS::) biquad UGen.
|
|
|
|
note::
|
|
Biquad coefficient calculations imply certain amount of CPU overhead. These plugin UGens contain optimizations such that the coefficients get updated only when there has been a change to one of the filter's parameters. This can cause spikes in CPU performance and should be considered when using several of these units.
|
|
::
|
|
|
|
classmethods::
|
|
method:: ar
|
|
argument:: in
|
|
input signal to be processed.
|
|
argument:: freq
|
|
center frequency.
|
|
WARNING: due to the nature of its implementation frequency values close to 0 may cause glitches and/or extremely loud audio artifacts!
|
|
argument:: rq
|
|
the reciprocal of Q. bandwidth / cutoffFreq.
|
|
argument:: mul
|
|
argument:: add
|
|
|
|
examples::
|
|
code::
|
|
s.boot;
|
|
(
|
|
z = { // thru
|
|
BAllPass.ar(
|
|
SoundIn.ar([0, 1]),
|
|
MouseX.kr(10, 18000, \exponential),
|
|
0.8, // rq
|
|
0.5); // mul
|
|
}.play)
|
|
z.release;
|
|
|
|
(
|
|
z = { // like a bandpass
|
|
var sig;
|
|
sig = SoundIn.ar([0,1]), * 0.5;
|
|
BAllPass.ar(sig, MouseX.kr(10, 18000, \exponential), 0.8) + sig.neg
|
|
}.play)
|
|
z.release;
|
|
::
|