object SOS extends ProductReader[SOS] with Serializable
A second order filter section (biquad) UGen. Filter coefficients are given directly rather than calculated for you. The formula is equivalent to:
out(i) = a0 * in(i) + a1 * in(i-1) + a2 * in(i-2) + b1 * out(i-1) + b2 * out(i-2)
Examples
// same as TwoPole play { val theta = MouseX.kr(0.2*math.Pi, 0.9*math.Pi) val rho = MouseY.kr(0.6, 0.98) val b1 = 2.0 * rho * theta.cos val b2 = -(rho.squared) SOS.ar(WhiteNoise.ar(Seq(0.05, 0.05)), 1.0, 0.0, 0.0, b1, b2) }
// used as control signal play { val theta = MouseX.kr(0.2*math.Pi, math.Pi) val rho = MouseY.kr(0.6, 0.99) val b1 = 2.0 * rho * theta.cos val b2 = -(rho.squared) val vib = SOS.kr(LFSaw.kr(3.16), 1.0, 0.0, 0.0, b1, b2) SinOsc.ar(vib * 200 + 600) * 0.2 }
- See also
Linear Supertypes
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- def ar(in: GE, a0: GE = 0.0f, a1: GE = 0.0f, a2: GE = 0.0f, b1: GE = 0.0f, b2: GE = 0.0f): SOS
- in
input signal to be filtered
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- def kr(in: GE, a0: GE = 0.0f, a1: GE = 0.0f, a2: GE = 0.0f, b1: GE = 0.0f, b2: GE = 0.0f): SOS
- in
input signal to be filtered
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