113 lines
2.6 KiB
Text
113 lines
2.6 KiB
Text
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#lang scribble/manual
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@(require (for-label racket))
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@title{GVerb}
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A two-channel reverb@section{categories}
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UGens>Reverbs
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@section{related}
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Classes/FreeVerb, Classes/FreeVerb2
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@section{description}
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A two-channel reverb link::Classes/UGen::, based on the "GVerb" LADSPA effect by Juhana Sadeharju (kouhia at nic.funet.fi).
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@section{subsection}
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Known issues
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@section{list}
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## There is a large CPU spike when the synth is instantiated while all the delay lines are zeroed out.
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## Quick changes in roomsize result in zipper noise.
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## emphasis::Changing the roomsize does not work properly! Still trying to look for the bug... (-josh)::
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::
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@section{classmethods}
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@section{method}
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ar
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@section{argument}
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in
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mono input.
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@section{argument}
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roomsize
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in squared meters.
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@section{argument}
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revtime
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in seconds.
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@section{argument}
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damping
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0 to 1, high frequency rolloff, 0 damps the reverb signal completely, 1 not at all.
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@section{argument}
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inputbw
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0 to 1, same as damping control, but on the input signal.
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@section{argument}
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spread
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a control on the stereo spread and diffusion of the reverb signal.
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@section{argument}
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drylevel
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amount of dry signal.
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@section{argument}
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earlyreflevel
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amount of early reflection level.
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@section{argument}
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taillevel
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amount of tail level.
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@section{argument}
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maxroomsize
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to set the size of the delay lines. Defaults to roomsize + 1.
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@section{argument}
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mul
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@section{argument}
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add
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@section{examples}
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@racketblock[
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SynthDef(\test, {arg roomsize, revtime, damping, inputbw, spread = 15, drylevel, earlylevel,
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taillevel;
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var a = Resonz.ar(
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Array.fill(4, {Dust.ar(2)}), 1760 * [1, 2, 4, 8], 0.01).sum * 10;
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// var a = SoundIn.ar(0);
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// var a = PlayBuf.ar(1, 0);
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Out.ar(0, GVerb.ar(
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a,
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roomsize,
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revtime,
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damping,
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inputbw,
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spread,
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drylevel.dbamp,
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earlylevel.dbamp,
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taillevel.dbamp,
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roomsize, 0.3) + a)}).add
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s.boot;
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s.scope(2);
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// bathroom
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a = Synth(\test, [\roomsize, 5, \revtime, 0.6, \damping, 0.62, \inputbw, 0.48, \drylevel -6, \earlylevel, -11, \taillevel, -13]);
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a.free;
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//living room
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a = Synth(\test, [\roomsize, 16, \revtime, 1.24, \damping, 0.10, \inputbw, 0.95, \drylevel -3, \earlylevel, -15, \taillevel, -17]);
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a.free;
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//church
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a = Synth(\test, [\roomsize, 80, \revtime, 4.85, \damping, 0.41, \inputbw, 0.19, \drylevel -3, \earlylevel, -9, \taillevel, -11]);
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a.free;
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// cathedral
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a = Synth(\test, [\roomsize, 243, \revtime, 1, \damping, 0.1, \inputbw, 0.34, \drylevel -3, \earlylevel, -11, \taillevel, -9]);
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a.free
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// canyon
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a = Synth(\test, [\roomsize, 300, \revtime, 103, \damping, 0.43, \inputbw, 0.51, \drylevel -5, \earlylevel, -26, \taillevel, -20]);
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a.free;
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s.quit;
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::
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]
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