An audio unit (often abbreviated as AU in header files and elsewhere) is a Mac OS X plug-in that enhances digital audio applications such as Logic Pro and GarageBand. You can also use audio units to build audio features into your own application. Programmatically, an audio unit is packaged as a bundle and configured as a component.
This sample is a "Hello World" starter project demonstrating how to build a Core Audio Audio Unit Effect with a custom Cocoa View.
The project builds a final AU component called MyGreatAUEffectWithCocoaUI.component with the following Type, SubType and Manufacturer.
aufx Pass Demo - SAMPLE: MyGreatAUEffectWithCocoaUI
Individual projects are included for building the older Component Manager style components for Mac OS X 10.6 and the newer Audio Component AUPlugIn for Mac OS X 10.7.
MyGreatAUEffectWithCocoaUI(Lion) Folder & MyGreatAUEffectWithCocoaUI(SnowLeopard) Folder.
See the included project specific ReadMe files for more information.
Technical Note TN2276 discusses the important project differences.
Audio Unit AUPlugIn - Updating an existing Audio Unit for Mac OS X Lion
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© 2012 Apple Inc. All Rights Reserved. (Last updated: 2012-10-23)