If you do not have access to any of the original Sony audio tools for handling .at3 and .aa3 files, your only option for at3 to aa3 conversion would be to use some of the 3rd party conversion programs, such as the AT3 to AA3 converter.
Home > Search converters: at3 to aa3
Conversion of at3 file format to aa3 file format beta
Search for at3 to aa3 converter or software able to handle these file types.
Convert Sony ATRAC3 audio to Sony ATRAC audio.
We have found 3 software records in our database eligible for .at3 to .aa3 file format conversion.
Microsoft Windows software 
- convert at3 to aa3 on Windows
Sound Forge
A digital audio editing software from Sony
File extension | Convert | Open | Save | Edit | Create | Import | Export | Extract |
|---|---|---|---|---|---|---|---|---|
Convert from at3 file | No | Yes | Yes | at3 editor | Yes | No | No | No |
to aa3 file | Yes, Sound Forge supports aa3 file conversion as a target file type. | Yes | Yes | aa3 editor | Yes | No | No | No |
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned at3 to aa3. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
ACID Pro
A dedicated Audio production program
AT3 to AA3 Converter
A converter for Sony audio
Additional links: Open at3 file, Open aa3 file
AT3
Files with at3 file extension was also sometimes used for Sony ATRAC audio format. No longer actively used.
AA3
Files with aa3 extension is used for a special Adaptive Transform Acoustic Coding (ATRAC) format used by Sony for their MiniDisc format.
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