Packages

object DegreeToKey extends Serializable

A UGen that uses an input signal as an index into an octave repeating table of pitch classes. The input is truncated to an integer, and indices wrap around the table and shift octaves as they do.

Examples
// modal space where mouse x controls pitch step
play {
  // initialize the scale buffer (Dorian)
  val scale = Vector(0, 2, 3.2, 5, 7, 9, 10)
  val buf   = LocalBuf(scale.size)
  SetBuf(buf, scale)

  // base MIDI pitch
  val base  = DegreeToKey.kr(buf, in = MouseX.kr(0, 15), octave = 12) + 72
  val noise = LFNoise1.kr(Seq(3, 3)) * 0.04  // low freq stereo detuning
  // lead tone
  val lead  = SinOsc.ar((base + noise).midicps)
  // drone 5ths
  val drone = RLPF.ar(LFPulse.ar(Seq(48.midicps, 55.midicps), 0.15),
                      SinOsc.kr(0.1).madd(10, 72).midicps, 0.1)
  val mix = (lead + drone) * 0.1
  // add some 70's euro-space-rock echo
  CombN.ar(mix, 0.31, 0.31, 2) + mix
}
See also

WrapIndex

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  4. def ar(buf: GE, in: GE, octave: GE = 12): DegreeToKey

    buf

    buffer which contains the steps for each scale degree.

    in

    input index signal

    octave

    number of steps per octave in the scale.

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  13. def kr(buf: GE, in: GE, octave: GE = 12): DegreeToKey

    buf

    buffer which contains the steps for each scale degree.

    in

    input index signal

    octave

    number of steps per octave in the scale.

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