ATRAC CD

A Sony car stereo capable of playing ATRAC CDs

An ATRAC CD is a compressed audio optical disc containing compressed digital audio in the ATRAC3 or ATRAC3plus formats, which are part of Sony's ATRAC (Adaptive Transform Acoustic Coding) family of proprietary audio compression algorithms.

Description

ATRAC CD was used with SonicStage Simple Burner software (Ver.1.0 / 1.1) in February 2003, ^{[1] [2]} and was subsequently replaced with SonicStage in 2004. The new CD Walkman product was called "ATRAC CD Walkman". In the following year (2004-2005), ATRAC CD boombox was introduced, as a new product.

ATRAC Technology ^[3]

	CD (Linear PCM)	ATRAC [4]	ATRAC3	ATRAC3plus
Bitrate	1411kbit/s	292kbit/s	132kbit/s	64kbit/s
Data size (One 4 minute track)	42.33MB	8.77MB	3.97MB	1.94MB
Number of Tracks Recorded into CD-R (700 MB)	About 16 tracks	About 79 tracks	About 176 tracks	About 360 tracks

Software for burning ATRAC CD

The difference of ATRAC3plus/ATRAC3 and MP3 file structure

The ATRAC CD can be burned with SonicStage Simple Burner Ver.1.1, SonicStage 2.x to 3.x and SonicStage CP. This software is able to create a disk image from MP3 files and compact discs and can be burned with the included CD-R/RW drive on a computer.

Storage Comparison of ATRAC CD on a regular CD-R

Format	Bitrate	Songs (Estimated at 4 minutes / song)
ATRAC3plus	48kbit/s	490 Songs [4]
ATRAC3plus	64kbit/s	360 Songs
ATRAC3	66kbit/s	350 Songs
ATRAC3	105kbit/s	220 Songs
ATRAC3	132kbit/s	170 Songs
ATRAC3plus	256kbit/s	90 Songs

See also

• Walkman
• SonicStage
• ATRAC
• OpenMG
• Hi-MD

References

1. Quick Reference Guide - SONY USA
2. SONY D-NE1 Catalog
3. "Sony Global - ATRAC - Overview". www.sony.net. Archived from the original on 2022-07-06. Retrieved 2020-07-18.
4. "ATRAC" here refers to the SP mode used in the MD format.
5. "SONY D-NE10" (PDF). Retrieved 2021-04-24.

External links

• ATRAC
• SONY CD Walkman