HelpSource/Classes/BAllPass.schelp

   1 class:: BAllPass
   2 summary:: All Pass Filter
   3 categories:: UGens>Filters>BEQSuite
   4 related:: Classes/SOS, Classes/BLowPass, Classes/BLowPass4, Classes/BHiPass, Classes/BHiPass4, Classes/BPeakEQ, Classes/BLowShelf, Classes/BHiShelf, Classes/BBandPass, Classes/BBandStop
   5
   6 description::
   7 The B equalization suite is based on the Second Order Section (link::Classes/SOS::) biquad UGen.
   8
   9 note::
  10 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.
  11 ::
  12
  13 classmethods::
  14 method:: ar
  15 argument:: in
  16 input signal to be processed.
  17 argument:: freq
  18 center frequency.
  19 argument:: rq
  20 the reciprocal of Q. bandwidth / cutoffFreq.
  21
  22 examples::
  23 code::
  24 s.boot;
  25 (
  26 z = { // thru
  27 BAllPass.ar(
  28         SoundIn.ar([0, 1]),
  29         MouseX.kr(10, 18000, \exponential),
  30         0.8, // rq
  31         0.5); // mul
  32 }.play)
  33 z.release;
  34
  35 (
  36 z = { // like a bandpass
  37         var sig;
  38         sig = SoundIn.ar([0,1]), * 0.5;
  39         BAllPass.ar(sig, MouseX.kr(10, 18000, \exponential), 0.8) + sig.neg
  40 }.play)
  41 z.release;
  42 ::