From Amicitia Wiki
AT9 Format
Purpose Sound File
Games Persona 4 Golden
Persona 4 Dancing All Night
Developer Sony

Adaptive Transform Acoustic Coding (ATRAC) is a family of proprietary audio compression algorithms developed by Sony.


AT9 Tool[edit]

A commandline tool to convert WAV files to AT9, Available here

Audio middleware[edit]

Audio middleware such as FMOD and Audiokinetic Wwise support it.

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