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Line 3: {{no footnotes\|date = October 2011}} [[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~~. ~~SBC is the core technique used in many popular [[lossy audio compression]] algorithms including [[MP3]].~~ ==Encoding audio signals==

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