Sub-band coding: Difference between revisions

Revision as of 16:53, 9 September 2016

Revision as of 16:55, 9 September 2016

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[[File:SubBandCoding.svg|thumb|500px|Sub-band coding and decoding signal flow diagram]]

In [[signal processing]], '''sub-band coding''' ('''SBC''') is any form of [[transform coding]] that breaks a signal into a number of different [[frequency band]]s, typically by using a [[fast Fourier transform]], and encodes each one independently. This decomposition is often the first step in data compression for audio and video signals.

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Beginning in the late 1980s, a standardization body called the Motion Picture Experts Group (MPEG) developed generic standards for coding of both audio and video. Subband coding resides at the heart of the popular MP3 format (more properly known as [[MPEG-1 Audio Layer III]]), for example.

==References==

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==External links==

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{{Compression Methods}}

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[[Category:Data compression]]