subband encoding

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subband encoding definition


An audio compression technique where the sound is split into frequency bands and then parts of the signal which the ear cannot detect are removed, e.g. a quiet sound masked by a loud one. The remaining signal is encoded using variable bit-rates with more bits per sample being used in the mid frequency range.
Subband encoding is used in MPEG-1.
(1994-11-02)

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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