Packages

object DecodeB2 extends Serializable

A two dimensional Ambisonics B-format decoding UGen. It assumes a set of speakers in a regular polygon. The output channels are in clockwise order. The position of the first speaker is specified by the orient argument.

Examples
// 4-channel rotation of opposite sounds
play {
  val p = WhiteNoise.ar(0.05)                     // first source
  val q = Mix(LFSaw.ar(Seq(200, 200.37))) * 0.03  // second source
  // B-format encode 2 signals at opposite sides of the circle
  val enc = PanB2.ar(p, -0.5) + PanB2.ar(q, +0.5)
  val Seq(w, x, y) = (0 to 2).map(enc \ _)
  val rot = Rotate2.ar(x, y, MouseX.kr(-1, +1))
  // B-format decode to quad (front-left, front-right, rear-left, rear-right)
  DecodeB2.ar(4, w, rot.xr, rot.yr)
}
See also

PanB

PanB2

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  4. def ar(numChannels: Int, w: GE, x: GE, y: GE, orient: GE = 0.5f): DecodeB2

    numChannels

    the number of output channels to produce

    w

    W (first) channel of B-format input signal

    x

    X (second) channel of B-format input signal

    y

    Y (third) channel of B-format input signal

    orient

    orientation of the first channel. If zero, the first channel corresponds to the front vertex of the polygon. If the polygon does not have an edge at the front but a vertex, then an orient of 0.5 indicates that the first channel corresponds to the speaker left of the center.

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  13. def kr(numChannels: Int, w: GE, x: GE, y: GE, orient: GE = 0.5f): DecodeB2

    numChannels

    the number of output channels to produce

    w

    W (first) channel of B-format input signal

    x

    X (second) channel of B-format input signal

    y

    Y (third) channel of B-format input signal

    orient

    orientation of the first channel. If zero, the first channel corresponds to the front vertex of the polygon. If the polygon does not have an edge at the front but a vertex, then an orient of 0.5 indicates that the first channel corresponds to the speaker left of the center.

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