Packages

object Resonz extends Serializable

A two pole resonant filter UGen. It has zeroes at z = +1 and z = -1.

Based on K. Steiglitz, "A Note on Constant-Gain Digital Resonators", Computer Music Journal, vol 18, no. 4, pp. 8-10, Winter 1994.

Examples
// modulated frequency
play {
  val in   = Saw.ar(200) * 0.5
  val freq = SinOsc.ar(XLine.ar(0.3, 100, 20)).madd(3600, 4000)
  Resonz.ar(in, freq)
}
// mouse controlled frequency and Q
play {
  val in   = WhiteNoise.ar(0.5)
  val freq = MouseX.kr(200, 10000, 1)
  val q    = MouseY.kr(1, 100, 1) // bottom to top
  val flt  = Resonz.ar(in, freq, q.reciprocal)
  flt * q.sqrt // compensate for energy loss
}
See also

BPF

Ringz

HPF

LPF

MidEQ

Linear Supertypes
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  1. final def !=(arg0: Any): Boolean
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  4. def ar(in: GE, freq: GE = 440.0f, rq: GE = 1.0f): Resonz

    in

    input signal to be filtered

    freq

    resonant frequency in Hertz

    rq

    reciprocal of Q. The Q (or quality) is conventionally defined as center-frequency / bandwidth, meaning that rq  = bandwidth / center-frequency. A higher Q or lower rq produces a steeper filter.

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  13. def kr(in: GE, freq: GE = 440.0f, rq: GE = 1.0f): Resonz

    in

    input signal to be filtered

    freq

    resonant frequency in Hertz

    rq

    reciprocal of Q. The Q (or quality) is conventionally defined as center-frequency / bandwidth, meaning that rq  = bandwidth / center-frequency. A higher Q or lower rq produces a steeper filter.

  14. final def ne(arg0: AnyRef): Boolean
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