77 lines
1.2 KiB
Text
77 lines
1.2 KiB
Text
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#lang scribble/manual
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@(require (for-label racket))
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@title{BiPanB2}
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2D Ambisonic B-format panner.@section{related}
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Classes/DecodeB2, Classes/PanB, Classes/PanB2, Classes/Rotate2
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@section{categories}
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UGens>Multichannel>Ambisonics
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@section{description}
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Encode a two channel signal to two dimensional ambisonic B-format. This
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puts two channels at opposite poles of a 2D ambisonic field. This is one
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way to map a stereo sound onto a soundfield. It is equivalent to:
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@racketblock[
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PanB2(inA, azimuth, gain) + PanB2(inB, azimuth + 1, gain)
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::
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]
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@section{classmethods}
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@section{method}
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ar, kr
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@section{argument}
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inA
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Input signal A
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@section{argument}
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inB
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Input signal B.
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@section{argument}
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azimuth
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Position around the circle from -1 to +1.
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-1 is behind, -0.5 is left, 0 is forward, +0.5 is right, +1 is behind.
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@section{argument}
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gain
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Amplitude control.
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@section{Examples}
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@racketblock[
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(
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{
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var w, x, y, p, q, a, b, c, d;
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p = LFSaw.ar(200);
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q = LFSaw.ar(301);
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// B-format encode
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#w, x, y = BiPanB2.ar(p, q, MouseX.kr(-1,1), 0.1);
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// B-format decode to quad
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#a, b, c, d = DecodeB2.ar(4, w, x, y);
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[a, b, d, c] // reorder to my speaker arrangement: Lf Rf Lr Rr
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}.play;
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)
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::
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]
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