ATRAC3


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ATRAC3

(Adaptive TRansform Acoustic Coding3) An audio compression technology from Sony that provides multiple compression ratios depending on desired sound quality. At 132 Kbps, the music can be compressed to approximately 10% of the space used by a CD. Introduced on the MiniDisc in 1993, the original ATRAC format provided near CD quality sound, but ATRAC3, introduced in 1999, rivals the CD. ATRAC compression is 5:1; ATRAC3 is 10:1.

ATRAC3plus
In 2002, Sony introduced ATRAC3plus, which provides a 20:1 compression ratio, bringing the data down to 5% of the original CD. It can achieve very high quality sound at 48 and 64 Kbps or be practically indistinguishable from the original at 256 Kbps. The CD data rate is 1,411 Kbps. See Memory Stick and OpenMG.
References in periodicals archive ?
The new model features an integrated digital audio player (MP3 and ATRAC3 file formats) along with the handheld industry's highest quality LCD screen with 320 x 320 pixel resolution and 16-bit color (more than 65,000 colors) support.
Digital's multi-codec platform including ATRAC3 support can be incorporated into a variety of products including portable digital music players, home and automotive stereos, and functionally-enhanced wireless phones.
While supporting existing major audio compression formats, Sony has renewed its commitment to sound quality with support across the range for ATRAC3 and ATRAC3plus, high performance compression schemes based on sophisticated psychoacoustic principles and the basis of proven MiniDisc technology.
The unit can record from sources including mic in, line in and USB, and plays back MP3 and ATRAC3 audio files.
The songs, which will be formatted for playback on the Microsoft Windows Media Player with an ATRAC3 plug-in, can then be transferred from the user's hard drive to compatible SDMI-compliant portable devices currently on the market.
The songs will be formatted for playback on the Microsoft Windows Media Player with an ATRAC3 plug-in, and can then be transferred from the user's hard drive to compatible SDMI-compliant portable devices currently on the market.
In addition, Liquid Audio's open distribution services now support many leading formats including MP3, Dolby Digital, AAC, Sony's ATRAC3 and Windows Media, and integrates with leading music players including RealNetworks RealPlayer and RealJukebox and soon AOL's WinAmp.
Digital's flexible designs incorporate support for multiple music compression formats -- including ePAC, AAC, ATRAC3, MP3, and others.
Consumer electronics manufacturers can tap into the potential portable device market by licensing such technologies as OpenMG, MagicGate Memory Stick and ATRAC3.