Packages

object BPF extends ProductReader[BPF] with Serializable

A second order band pass filter UGen.

Examples
// modulated frequency
play {
  val in   = Saw.ar(200) * 0.5
  val freq = SinOsc.ar(XLine.ar(0.3, 100, 20)).mulAdd(3600, 4000)
  BPF.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  = BPF.ar(in, freq, q.reciprocal)
  flt * q.sqrt // compensate for energy loss
}
See also

HPF

LPF

BRF

Resonz

MidEQ

Linear Supertypes
Serializable, ProductReader[BPF], AnyRef, Any
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Inherited
  1. BPF
  2. Serializable
  3. ProductReader
  4. AnyRef
  5. Any
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Visibility
  1. Public
  2. Protected

Value Members

  1. def ar(in: GE, freq: GE = 440.0f, rq: GE = 1.0f): BPF

    in

    input signal to be filtered

    freq

    center 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.

  2. def kr(in: GE, freq: GE = 440.0f, rq: GE = 1.0f): BPF

    in

    input signal to be filtered

    freq

    center 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.

  3. def read(in: RefMapIn, key: String, arity: Int): BPF
    Definition Classes
    BPF → ProductReader