/usr/share/SuperCollider/HelpSource/Classes/MidEQ.schelp is in supercollider-common 1:3.8.0~repack-2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 | class:: MidEQ
summary:: Parametric filter.
categories:: UGens>Filters>Linear
Description::
Attenuates or boosts a frequency band.
classmethods::
method::ar, kr
argument::in
The input signal.
argument::freq
Center frequency of the band in Hertz.
argument::rq
The reciprocal of Q (bandwidth / cutoffFreq).
argument::db
Amount of boost (db > 0) or attenuation (db < 0) of the
frequency band.
argument::mul
Output will be multiplied by this value.
argument::add
This value will be added to the output.
Examples::
code::
// mixer parametric eq as wahwah
{ MidEQ.ar(Saw.ar(200,0.2), FSinOsc.kr(1, 0, 24, 84).midicps, 0.3, 12) }.play
// notch filter
(
{ var in;
in = PinkNoise.ar(0.2) + SinOsc.ar(600, 0, 0.1);
MidEQ.ar(in, SinOsc.kr(0.2, 0.5pi) * 2 + 600, 0.01, -24)
}.play
)
/////
// first start the synth
(
x = {| freq=400, db=0, rq=0.1 |
var in;
in = SinOsc.ar([ 400, 420 ], 0, 0.4);
MidEQ.ar(in, freq, Lag.kr(rq, 0.3), db)
}.play
)
// now play with its parameters to hear how the filter affects two frequencies
// that are very close to each other
x.set(\db, -12)
x.set(\rq, 0.1)
x.set(\rq, 0.03)
x.set(\freq, 410)
x.set(\freq, 420)
x.set(\freq, 400)
x.set(\freq, 500)
::
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