Packages

object AmpComp extends ProductReader[AmpComp] with Serializable

A UGen that produces a psychoacoustic amplitude compensation factor for a given frequency.

Implements the formula: (root / freq).pow(exp)

Higher frequencies are normally perceived as louder, therefore AmpComp outputs lower values for them. For example, with default parameters, the pitch C4 (frequency 262 Hz) produces the base factor of 1.0, whereas a pitch one octave up, C5 (or 523 Hz) produces a factor of 0.793719 (an attenuation of -2 dB).

An alternative is AmpCompA that better models the bell-shaped equal loudness contours of the hearing system. Especially note that the output of this UGen can become very high for frequencies much lower than the root parameter.

Examples
// activate with mouse button
play {
  val freq = MouseX.kr(300, 15000, 1)
  val mod  = freq * SinOsc.ar(MouseY.kr(3, 200, 1)).mulAdd(0.5, 1)
  val corr = AmpComp.ar(mod, 300) * 2
  val amp  = Select.ar(MouseButton.kr(lag = 0), Seq(DC.ar(1), corr))
  SinOsc.ar(mod) * 0.1 * amp
}
See also

AmpCompA

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

Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##: Int
    Definition Classes
    AnyRef → Any
  3. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  4. def ar(freq: GE = 261.626f, root: GE = 261.626f, expon: GE = 0.3333f): AmpComp

    freq

    the frequency in Hertz for which to determine the compensation factor

    root

    the base frequency corresponding to a compensation factor of 1.0

    expon

    the exponent determines how steep the compensation curve decreases for increasing frequencies. In general, the louder a signal is played, the shallower the equal loudness contours become.

  5. def ar: AmpComp
  6. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  7. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.CloneNotSupportedException]) @native() @HotSpotIntrinsicCandidate()
  8. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  9. def equals(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef → Any
  10. final def getClass(): Class[_ <: AnyRef]
    Definition Classes
    AnyRef → Any
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  11. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  12. def ir(freq: GE = 261.626f, root: GE = 261.626f, expon: GE = 0.3333f): AmpComp

    freq

    the frequency in Hertz for which to determine the compensation factor

    root

    the base frequency corresponding to a compensation factor of 1.0

    expon

    the exponent determines how steep the compensation curve decreases for increasing frequencies. In general, the louder a signal is played, the shallower the equal loudness contours become.

  13. def ir: AmpComp
  14. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  15. def kr(freq: GE = 261.626f, root: GE = 261.626f, expon: GE = 0.3333f): AmpComp

    freq

    the frequency in Hertz for which to determine the compensation factor

    root

    the base frequency corresponding to a compensation factor of 1.0

    expon

    the exponent determines how steep the compensation curve decreases for increasing frequencies. In general, the louder a signal is played, the shallower the equal loudness contours become.

  16. def kr: AmpComp
  17. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  18. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  19. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  20. def read(in: RefMapIn, key: String, arity: Int): AmpComp
    Definition Classes
    AmpComp → ProductReader
  21. final def synchronized[T0](arg0: => T0): T0
    Definition Classes
    AnyRef
  22. def toString(): String
    Definition Classes
    AnyRef → Any
  23. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  24. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException]) @native()
  25. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])

Deprecated Value Members

  1. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.Throwable]) @Deprecated
    Deprecated

Inherited from Serializable

Inherited from ProductReader[AmpComp]

Inherited from AnyRef

Inherited from Any

Ungrouped