Resonz

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: MidEQ
LPF
HPF
Ringz
BPF

Linear Supertypes

Serializable, Serializable, AnyRef, Any

Value Members

final def !=(arg0: AnyRef): Boolean

Definition Classes
AnyRef
final def !=(arg0: Any): Boolean

Definition Classes
Any
final def ##(): Int

Definition Classes
AnyRef → Any
final def ==(arg0: AnyRef): Boolean

Definition Classes
AnyRef
final def ==(arg0: Any): Boolean

Definition Classes
Any
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.
final def asInstanceOf[T0]: T0

Definition Classes
Any
def clone(): AnyRef

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( ... )
final def eq(arg0: AnyRef): Boolean

Definition Classes
AnyRef
def equals(arg0: Any): Boolean

Definition Classes
AnyRef → Any
def finalize(): Unit

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( classOf[java.lang.Throwable] )
final def getClass(): Class[_]

Definition Classes
AnyRef → Any
def hashCode(): Int

Definition Classes
AnyRef → Any
final def isInstanceOf[T0]: Boolean

Definition Classes
Any
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.
final def ne(arg0: AnyRef): Boolean

Definition Classes
AnyRef
final def notify(): Unit

Definition Classes
AnyRef
final def notifyAll(): Unit

Definition Classes
AnyRef
final def synchronized[T0](arg0: ⇒ T0): T0

Definition Classes
AnyRef
def toString(): String

Definition Classes
AnyRef → Any
final def wait(): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long, arg1: Int): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )

object Resonz extends Serializable

Examples

Value Members

final def !=(arg0: AnyRef): Boolean

final def !=(arg0: Any): Boolean

final def ##(): Int

final def ==(arg0: AnyRef): Boolean

final def ==(arg0: Any): Boolean

def ar(in: GE, freq: GE = 440.0f, rq: GE = 1.0f): Resonz

final def asInstanceOf[T0]: T0

def clone(): AnyRef

final def eq(arg0: AnyRef): Boolean

def equals(arg0: Any): Boolean

def finalize(): Unit

final def getClass(): Class[_]

def hashCode(): Int

final def isInstanceOf[T0]: Boolean

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

final def ne(arg0: AnyRef): Boolean

final def notify(): Unit

final def notifyAll(): Unit

final def synchronized[T0](arg0: ⇒ T0): T0

def toString(): String

final def wait(): Unit

final def wait(arg0: Long, arg1: Int): Unit

final def wait(arg0: Long): Unit

Inherited from Serializable

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

Ungrouped