object Rotate2 extends ProductReader[Rotate2] with Serializable
A UGen that can be used for rotating an ambisonic B-format sound field around
an axis. It uses an equal-power rotation so it also works well on stereo sounds.
It takes two audio inputs ( x , y ) and an angle control ( pos ). It
outputs again two channels, using these formulas:
xr = cos(angle) * x + sin(angle) * y yr = cos(angle) * y - sin(angle) * x
where angle = pos * Pi . This allows, for example, the use of LFSaw to
create a continuous rotation around a circle.
Note: Be careful when accessing the output channels. xr and yr are
the X and Y output channels, whereas x and y refers to the X and Y input
channel.
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 out _) 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) }
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- def ar(x: GE, y: GE, pos: GE = 0.0f): Rotate2
- x
B-format X input channel
- y
B-format Y input channel
- pos
angle to rotate around the circle, normalized between -1 and +1. -1 and +1 corresponds to -180 and +180 degrees (behind), -0.5 is 90 degrees left, 0 is frontal, +0.5 is 90 degrees right.
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- def kr(x: GE, y: GE, pos: GE = 0.0f): Rotate2
- x
B-format X input channel
- y
B-format Y input channel
- pos
angle to rotate around the circle, normalized between -1 and +1. -1 and +1 corresponds to -180 and +180 degrees (behind), -0.5 is 90 degrees left, 0 is frontal, +0.5 is 90 degrees right.
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