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2 File Associations

.AU File Extension

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Audio File Icon
File TypeAudio File
DeveloperN/A
Popularity
3.6 (5 Votes) Thanks for voting!
Rare Uncommon Average Common Very Common
CategoryAudio Files
File Format Description

Audio file introduced by Sun Microsystems; used primarily on Sun or other Unix-based machines and has been adopted by several audio programs, including Adobe Audition and QuickTime; stores the data in three parts: a header (24 bytes), a variable length annotation block, and the actual audio data.

Program(s) that open .AU files
Updated 5/2/2014

Generic Icon
File TypeAudacity Audio File
DeveloperAudacity
Popularity
2.0 (1 Vote) Thanks for voting!
Rare Uncommon Average Common Very Common
CategoryAudio Files
File Format Description

Audio file created by Audacity, a free, cross platform audio editor; uses a proprietary format that can only be opened by Audacity; saved as one of multiple audio data files for an Audacity project (.AUD).

When you created a project in Audacity and import audio files, the audio data is converted to the AU format and is stored in a folder with the project called myproject_data, where the project name is myproject.aud. When done editing a project, you can export the audio to several standard formats, including .MP3, .WAV, and .M4A.

NOTE: Audacity's AU format is not compatible with the standard AU audio file format.

Program(s) that open .AU files
Microsoft Windows Logo
Windows
Audacity Icon Audacity
Mac OS X Logo
Mac OS
Audacity Icon Audacity
Linux Logo
Linux
Audacity Icon Audacity
Updated 5/10/2012