Class

AUParameter

An AUParameter object represents a single audio unit parameter.

Declaration

@interface AUParameter : AUParameterNode

Topics

Querying Parameter Properties

minValue

The parameter’s minimum value.

maxValue

The parameter’s maximum value.

unit

The parameter’s unit of measurement.

unitName

The parameter’s localized unit name.

flags

The parameter’s characteristic details.

address

The parameter’s address.

valueStrings

The parameter’s localized value strings.

dependentParameters

Any other parameter’s whose values may change as a side effect of this parameter’s value changing.

Managing Parameter Values

value

The parameter’s current value.

- setValue:originator:

Sets the parameter’s value, avoiding redundant notifications to the originator.

- setValue:originator:atHostTime:

Sets the parameter’s value, preserving the host time of the gesture that initiated the change.

- stringFromValue:

Gets the string representation of a parameter value.

- valueFromString:

Converts a string into a parameter value.

Relationships

Inherits From

Conforms To

See Also

Audio Unit v3

AUAudioUnit

The AUAudioUnit class defines a host’s interface to an audio unit.

AUAudioUnitBus

The AUAudioUnitBus class defines an input or output connection point on an audio unit.

AUAudioUnitBusArray

The AUAudioUnitBusArray class defines a container for an audio unit’s input or output busses.

AUAudioUnitPreset

The AUAudioUnitPreset class describes an interface for custom parameter settings provided by the audio unit developer. These presets often produce a useful sound or starting point.

AUAudioUnitV2Bridge

The AUAudioUnitV2Bridge class wraps a version 2 audio unit in an AUAudioUnit subclass.

AUParameterGroup

An AUParameterGroup object represents a group of related audio unit parameters. A parameter group is KVC-compliant for its children.

AUParameterNode

An AUParameterNode object represents a node in an audio unit’s parameter tree. Nodes are instances of either an AUParameter or AUParameterGroup class.

AUParameterTree

An AUParameterTree object is a top-level group node, representing all of an audio unit’s parameters. An audio unit’s parameters are organized into a tree containing groups and parameters (groups may be nested).

AUAudioUnitFactory

Implement this protocol to create a version 3 audio unit.

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