Adaptive Transform Acoustic Coding
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Adaptive Transform Acoustic Coding (ATRAC) is a family of proprietary audio compression algorithms created by Sony. It was designed to meet the need for the [[MiniDisc]] format to maintain high sound quality and a 74 minute playing time, despite having considerably less storage space than an [[CD-DA|Audio CD]]. | Adaptive Transform Acoustic Coding (ATRAC) is a family of proprietary audio compression algorithms created by Sony. It was designed to meet the need for the [[MiniDisc]] format to maintain high sound quality and a 74 minute playing time, despite having considerably less storage space than an [[CD-DA|Audio CD]]. | ||
| − | A number of improved versions of ATRAC have been released since 1992 - ATRAC3 (1999), ATRAC3plus (2002), [[ATRAC Advanced Lossless]] (2006). | + | A number of improved versions of ATRAC have been released since [[ATRAC1]] (1992) - ATRAC3 (1999), ATRAC3plus (2002), [[ATRAC Advanced Lossless]] (2006). |
Per [http://blog.washingtonpost.com/fasterforward/2007/08/sony_connect_atrac_exit_the_st.html this] Washington Post article, Sony has largely dropped support for ATRAC, although it is not clear to what extent. The [[PlayStation 3]] supports playback of ATRAC3plus and [[ATRAC Advanced Lossless]] files, and the [http://en.wikipedia.org/wiki/Adaptive_Transform_Acoustic_Coding Wikipedia article] suggests that some support remains in Japan. | Per [http://blog.washingtonpost.com/fasterforward/2007/08/sony_connect_atrac_exit_the_st.html this] Washington Post article, Sony has largely dropped support for ATRAC, although it is not clear to what extent. The [[PlayStation 3]] supports playback of ATRAC3plus and [[ATRAC Advanced Lossless]] files, and the [http://en.wikipedia.org/wiki/Adaptive_Transform_Acoustic_Coding Wikipedia article] suggests that some support remains in Japan. | ||
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* [http://www.minidisc.org/aes_atrac.html ATRAC: Adaptive Transform Acoustic Coding for MiniDisc] - a description of the psychoacoustic principles, encoder and decoder for the original ATRAC format | * [http://www.minidisc.org/aes_atrac.html ATRAC: Adaptive Transform Acoustic Coding for MiniDisc] - a description of the psychoacoustic principles, encoder and decoder for the original ATRAC format | ||
| − | * [https://github.com/FFmpeg/FFmpeg/blob/master/libavcodec/atrac1.c Source] for FFmpeg's ATRAC1 compatible decoder | + | * [https://github.com/FFmpeg/FFmpeg/blob/master/libavcodec/atrac1.c Source] for FFmpeg's [[ATRAC1]] compatible decoder |
* [https://github.com/FFmpeg/FFmpeg/blob/master/libavcodec/atrac3.c Source] for FFmpeg's ATRAC3 compatible decoder | * [https://github.com/FFmpeg/FFmpeg/blob/master/libavcodec/atrac3.c Source] for FFmpeg's ATRAC3 compatible decoder | ||
* [https://github.com/FFmpeg/FFmpeg/blob/master/libavcodec/atrac3plus.c Source] for FFmpeg's ATRAC3plus compatible decoder | * [https://github.com/FFmpeg/FFmpeg/blob/master/libavcodec/atrac3plus.c Source] for FFmpeg's ATRAC3plus compatible decoder | ||
Latest revision as of 04:34, 8 September 2024
Contents |
[edit] Description
Adaptive Transform Acoustic Coding (ATRAC) is a family of proprietary audio compression algorithms created by Sony. It was designed to meet the need for the MiniDisc format to maintain high sound quality and a 74 minute playing time, despite having considerably less storage space than an Audio CD.
A number of improved versions of ATRAC have been released since ATRAC1 (1992) - ATRAC3 (1999), ATRAC3plus (2002), ATRAC Advanced Lossless (2006).
Per this Washington Post article, Sony has largely dropped support for ATRAC, although it is not clear to what extent. The PlayStation 3 supports playback of ATRAC3plus and ATRAC Advanced Lossless files, and the Wikipedia article suggests that some support remains in Japan.
[edit] Information
- ATRAC: Adaptive Transform Acoustic Coding for MiniDisc - a description of the psychoacoustic principles, encoder and decoder for the original ATRAC format
- Source for FFmpeg's ATRAC1 compatible decoder
- Source for FFmpeg's ATRAC3 compatible decoder
- Source for FFmpeg's ATRAC3plus compatible decoder
- LGPL implementation of ATRAC1, ATRAC3 encoders
[edit] Software
- FFmpeg has decoders for ATRAC, ATRAC3 and ATRAC3plus
- A suite of tools for converting ATRAC to MP3
- SonicStage v4.3, which supports ATRAC3 / 3plus and ATRAC Advanced Lossless
