SuperCollider CLASSES (extension)

Extension

First Order Ambisonic (FOA) diametric decoder speaker matrices

Inherits from: Object

Generates speaker matrices required by the Ambisonic Toolkit's first order diametric decoder, FoaDecoderMatrix: *newDiametric.^{1}

NOTE: In normal circumstances, the user will not call FoaSpeakerMatrix directly.

directions |
An array of directions for half of the loudspeaker feeds for the desired decoder. Specify in radians. Rank 1 arrays return pantophonic, while rank 2 arrays return periphonic. E.g., // 2D: ~directions = [ theta0, theta1, ... thetaN ]; // 3D: ~directions = [ [ theta0, phi0 ], [ theta1, phi1 ], ... [ thetaN, phiN ] ]; |

k |
The k factor of the decoder. May be specified as a float: 0.5 to 1.0. |

positions |
An array of positions for half of the loudspeaker feeds for the desired decoder. Specify in cartesian coordinates. // 2D: ~positions = [ [ x0, y0 ], [ x1, y1 ], ... [ xN, yN ] ]; // 3D: ~positions = [ [ x0, y0, z0 ], [ x1, y1, z1 ], ... [ xN, yN, zN ] ]; |

k |
The k factor of the decoder. May be specified as a float: 0.5 to 1.0. |

Answers the number of decoder dimensions: 2D or 3D.

Answers the number of loudspeaker feeds (output channels).

Answers the position of loudspeaker feeds, in cartesian coordinates.

Answers the speaker matrix

Answer **k**

[1] - FoaSpeakerMatrix is Heller's speaker matrix helper used to generate matricies for diamatric decoding. See: See: E. Benjamin, R. Lee, and A. Heller, "Is My Decoder Ambisonic?," in Proceedings of the 125th Audio Engineering Society Convention, San Francisco, 2008.

helpfile source: /usr/local/share/SuperCollider/Extensions/SC3plugins/ATK/HelpSource/Classes/FoaSpeakerMatrix.schelp

link::Classes/FoaSpeakerMatrix::

sc version: 3.9dev

link::Classes/FoaSpeakerMatrix::

sc version: 3.9dev