de.sciss.synth.ugen

QuadN

object QuadN extends Serializable

A non-interpolating sound generator based on the difference equation:

x[n+1] = a * pow(x[n], 2) + b * x[n] + c
Examples
// default parameters
play { QuadN.ar(SampleRate.ir/4) * 0.2 }
// logistic map
play {
  // equation: x1 = -r*x0^2 + r*x0
  val r = MouseX.kr(3.5441, 4)    // stable range
  QuadN.ar(SampleRate.ir/4, -r, r, 0, 0.1) * 0.4
}
// logistic map as frequency control
play {
  val r = MouseX.kr(3.5441, 4)    // stable range
  SinOsc.ar(QuadN.ar(40, -r, r, 0, 0.1).madd(800, 900)) * 0.4
}
See also

QuadC

QuadL

Linear Supertypes
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  6. def ar(freq: GE = Nyquist(), a: GE = 1.0f, b: GE = 1.0f, c: GE = 0.75f, xi: GE = 0.0f): QuadN

    freq

    Iteration frequency in Hertz

    a

    Equation variable

    b

    Equation variable

    c

    Equation variable

    xi

    Initial value of x

  7. def ar: QuadN

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