Format
Atrac Codec File
Summary
- Name
- Atrac Codec File
- Version
- v.1
- Identifiers
- PUID: fmt/1968
- Format type
- Audio
- Description
- ATRAC (Adaptive Transform Acoustic Coding) is a family of proprietary audio compression algorithms developed by Sony. It was first commercially used in the MiniDisc in 1992. ATRAC enabled the storage of audio information on quite small devices (for the time), with limited loss is perceptible quality.
- File extensions
-
aea - Submitted by
- Bibliotheque Cantonale Universitaire de Fribourg / Bibliotheque Cantonale Universitaire de Fribourg
- Developed by
- Sony / Sony
Internal signatures
Atrac Codec File v.1
- Description
- BOF, offset 2896, magic bytes: …………………………..¬
- Provenance
- v.121: amended internal signature. Submitted by Brigham Young University.
Byte sequences
- Min Frag Length
- Absolute from BOF
- Offset
- 0
- Max offset
- 0
- Byte Sequence
00080000{260}(01|02)- Endianness
- None
- Min Frag Length
- Absolute from EOF
- Offset
- 0
- Max offset
- 1024
- Byte Sequence
AC- Endianness
- None
Changelog
-
V121
- Release date
- 24 September 2025
-
Updated
Atrac Codec File v.1: Amended internal signatures, added link to blog. Submitted by Brigham Young University.
-
V118
- Release date
- 30 April 2024
-
Added format
Atrac Codec File: Full entry added. Submitted by Bibliothèque Cantonale Universitaire de Fribourg.
-
Added signature
Atrac Codec File: Signature researched and samples provided by Bibliothèque Cantonale Universitaire de Fribourg.