Audio Unit Parameters

Overview

An audio unit parameter is a key, defined by the audio unit it applies to, whose corresponding value specifies the setting for an adjustable attribute such as volume, pitch, or filter cutoff frequency. Parameters are typically varied by the user during audio processing, by way of a user interface that you provide. All parameter values are of the same data type: 32-bit floating point. The audio unit that defines a parameter also defines the meaning of the value, the default value, and the permissible range.

Topics

Constants

3D Mixer Unit Parameters

Parameters for the 3D Mixer unit.

Multichannel Mixer Unit Parameters

Parameters for the Multichannel Mixer unit.

Bandpass Unit Parameters

Parameters for the Bandpass unit.

Highpass Unit Parameters

Parameters for the Highpass unit.

Lowpass Unit Parameters

Parameters for the Lowpass unit.

High Shelf Filter Unit Parameters

Parameters for the High Shelf Filter unit.

Low Shelf Filter Unit Parameters

Parameters for the Low Shelf Filter unit.

Parametric EQ Unit Parameters

Parameters for the Parametric EQ unit.

Multitype EQ (NBandEQ) Unit Parameters

Parameters for the Multitype EQ unit.

Mutitype EQ Unit Filter Types

Values for the kAUNBandEQParam_FilterType parameter of the Multitype EQ (NBandEQ) unit.

Dynamics Processor Unit Parameters

Parameters for the Dynamics Processor unit.

Peak Limiter Unit Parameters

Parameters for the Peak Limiter unit.

Reverb Unit Parameters

Parameters for the Reverb unit.

Additional Reverb Parameters

Additional reverb parameters.

Varispeed Unit Parameters

Parameters for the Varispeed unit.

MIDI Audio Unit Parameters

Parameters for instrument units.