Sub-band coding: Difference between revisions

Revision as of 05:10, 18 February 2004

Revision as of 05:12, 18 February 2004

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An'''Subband encoding''' is 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, for example, in [[MPEG-1]].

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