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adaptive transform acoustic coding

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    • US Pronunciation
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Definition of adaptive transform acoustic coding words

  • noun Technical meaning of 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. 1

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