Adaptive TRansform Acoustic Coding

(redirected from Atrac3plus)
Also found in: Wikipedia.

Adaptive TRansform Acoustic Coding

(algorithm)
(ATRAC) An audio compression algorithm, introduced by Sony for its Mini Disk, which relies on the masking of low-amplitude frequency components by temporaly adjacent high-amplitude components. ATRAC consists of a three-band subband encoder (0...5.5, 5.5...11, 11...22 kHz) and a MDCT based transformation encoder.

Mentioned in ?
References in periodicals archive ?
MemoryStick Micro, M2, ATRAC, ATRAC3plus are trademarks of Sony Corporations.
The advanced flash memory Network WALKMAN range from Sony today sees the addition of three new series, featuring Sony's renowned Stamina battery life, high quality sound ATRAC3plus and direct MP3 playback.
Still capable of playing back discs in the old MD format, Hi-MD players use ATRAC3 (65, 105 and 132kbps), ATRAC3plus (48,64 and 256kbps) and Linear PCM Codecs, representing a genuine step forward for the format.
Backwards compatibility ensures your old collection of discs will play Hi-MD using Sony's trusty ATRAC3plus compression technology to shoehorn the data onto dinky MDs.
The Sony VGP-MR100 features include MPEG-1 and MPEG-2 ("Giga Pocket" or "Do VAIO"), DV-AVI and HDV file (camcorder files), WMV support for video files, ATRAC3, ATRAC3plus, WAVE, MP3 and WMA support for audio files, JPEG, GIF, PNG, TIFF and BMP support for image files, IEEE 802.
Memory Stick Duo, Memory Stick PRO Duo, ATRAC3 and ATRAC3plus are trademarks of Sony Corporation.
ATRAC, ATRAC3, ATRAC3plus and their logos are trademarks or registered trademarks of Sony Corporation.
Support file formats include MP3, ATRAC3plus, JPEG and MPEG-4.
Industry-standard decoders and post-processors from Dolby, DTS and THX * MP3, Windows Media Audio (WMA) and ATRAC3plus encoder and decoder modules * Double-precision (64-bit) Bass Management * The TI Effects Library, which includes configurable modules for Graphical EQ, Room Simulators and Matrix Decoders * Optimized filter blocks for building custom algorithms * Bitstream auto-detection, system framework and I/O drivers.
Memory Stick Duo, Memory Stick PRO Duo, ATRAC3plus and MagicGate are trademarks of Sony Corporation.