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About Audio Unit technology.

Audio Unit (AU) is a plugin technology by Apple Computer, Inc for performing audio processing. Audio Units are designed to enhance functionality of any music production software system that is compatible with AU standard. AU standard is commonly used under macOS.

WIDI Audio To MIDI Audio Unit is a music recognition software that works within an AU-compatible hosts. In order to use it you need to have any music production system compatible with Audio Units. Some of the popular music production systems you can use with WIDI AU are listed below.

CompanySoftware nameWebsiteComments
Apple Computer Logic Pro
MOTU Digital Performer
Ableton AG Ableton Live
Apple Computer GarageBand
Plogue Art et Technologie Plogue Bidule
Rogue Amoeba Software Audio Hijack Pro MIDI recording not supported. *
HairerSoft Amadeus MIDI recording not supported. *

* This software does not support MIDI editing, but it is possible to route MIDI to any MIDI device or write it to file using built-in MIDI recorder.

All trademarks mentioned in this document belong to their respective owners.
Logic, GarageBand and Apple are registered trademarks of Apple Computer, Inc.
Plogue and Bidule are trademarks of Plogue Art et Technologie, Inc.
Intuem is a trademark of Companion Engineering & Design Corp
Digital Performer is a trademark of MOTU, Inc.
Ableton is a trademark of Ableton AG.
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Description of Audio Unit technology.