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class:: DecodeB2
summary:: 2D Ambisonic B-format decoder.
related:: Classes/BiPanB2, Classes/PanB, Classes/PanB2, Classes/Rotate2
categories:: UGens>Multichannel>Ambisonics
Description::
Decode a two dimensional ambisonic B-format signal to a set of speakers
in a regular polygon. The outputs will be in clockwise order. The
position of the first speaker is either center or left of center.
classmethods::
method::ar, kr
argument::numChans
Number of output speakers. Typically 4 to 8.
argument::w
The B-format signal.
argument::x
The B-format signal.
argument::y
The B-format signal.
argument::orientation
Should be zero if the front is a vertex of the polygon. The first
speaker will be directly in front. Should be 0.5 if the front
bisects a side of the polygon. Then the first speaker will be the
one left of center.
returns::
An array of channels, one for each speaker.
Examples::
code::
(
{
var w, x, y, p, a, b, c, d;
p = PinkNoise.ar; // source
// B-format encode
#w, x, y = PanB2.ar(p, MouseX.kr(-1,1), 0.1);
// B-format decode to quad
#a, b, c, d = DecodeB2.ar(4, w, x, y);
[a, b, d, c] // reorder to my speaker arrangement: Lf Rf Lr Rr
}.play;
)
::
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