An AUParameter object represents a node in an audio unit’s parameter tree. Nodes are instances of either an AUParameter or AUParameter class.
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Framework
class AUParameterNode : NSObject
var identifier: StringA non-localized, permanent name for the parameter node.
var keyA key path generated by concatenating the identifiers of the parameter and its parents.
var displayA localized display name for the parameter node.
func displayAnother version of the display name, possibly truncated to a desired length.
func token(byAdds an observer for a single parameter or all parameters in a group.
func token(byAdds a recording observer for a single parameter or all parameters in a group.
func removeRemove a specific parameter observer.
These properties are only of interest to audio unit subclasses.
var implementorThe callback for parameter value changes.
var implementorThe callback for refreshing known stale values in a parameter tree.
var implementorThe callback for providing a string representation of a parameter value.
var implementorThe callback for converting a string to a parameter value.
var implementorThe callback for obtaining an abbreviated version of a parameter node display name.
typealias AUParameterA block called after the value of a parameter changes.
typealias AUParameterA block called to record parameter changes as automation events.
typealias AUImplementorA block called to notify the audio unit implementation of changes to a parameter value.
typealias AUImplementorA block called to fetch a parameter’s current value from the audio unit implementation.
typealias AUImplementorA block called to convert a parameter value to a string representation.
typealias AUImplementorA block called to convert a string to a parameter value.
typealias AUImplementorA block called to obtain a parameter node’s display name, possibly truncated to a desired length.
class AUAudioThe AUAudio class defines a host’s interface to an audio unit.
class AUAudioThe AUAudio class defines an input or output connection point on an audio unit.
class AUAudioThe AUAudio class defines a container for an audio unit’s input or output busses.
class AUAudioThe AUAudio class describes an interface for custom parameter settings provided by the audio unit developer. These presets often produce a useful sound or starting point.
class AUAudioThe AUAudio class wraps a version 2 audio unit in an AUAudio subclass.
class AUParameterAn AUParameter object represents a single audio unit parameter.
class AUParameterAn AUParameter object represents a group of related audio unit parameters. A parameter group is KVC-compliant for its children.
class AUParameterAn AUParameter 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).
protocol AUAudioImplement this protocol to create a version 3 audio unit.
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