- iOS 2.0+
- macOS 10.0+
- tvOS 9.0+
Audio Unit Component Services provides the C interface for using audio units. An audio unit is an audio processing plug-in used for processing or generating audio data. To find, open, and close audio units, you use a companion interface, Audio Component Services, described in Audio Component Services.
An audio unit is uniquely identified by a triplet of codes known as type, subtype, and manufacturer ID. See the
Audio structure in Audio Component Services Reference.