Document Revision History

This table describes the changes to Audio Unit Component Services Reference.

DateNotes
2011-10-12

Added descriptions for “Generator Audio Unit Subtypes.”

 

Added descriptions for “Music Instrument Audio Unit Subtypes.”

 

Added descriptions for new audio unit subtypes in “Effect Audio Unit Subtypes.”

2011-03-12

Added memory management information for the AudioUnitGetProperty function.

2010-02-24

Added descriptions for several previously undocumented data types and constants.

2009-09-09

Updated for iPhone OS 3.0.

 

Added an “Callbacks” chapter. Added and improved API descriptions throughout document.

 

For iPhone OS, improved description of kAudioUnitSubType_VoiceProcessingIO constant.

2008-09-09Updated for iOS version 2.1.
2008-07-08New document that describes a C API for initializing and using audio units.