adaptive transform acoustic coding

Computing Dictionary

Adaptive TRansform Acoustic Coding definition

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.
[Does Sony Minidisk use ADPCM?]
(2001-12-13)
The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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