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Signal compression by subband coding

✍ Scribed by Bruce Francis; Soura Dasgupta

Book ID: 104105768
Publisher: Elsevier Science
Year: 1999
Tongue: English
Weight: 318 KB
Volume: 35
Category: Article
ISSN: 0005-1098
DOI: 10.1016/s0005-1098(99)00126-0

No coin nor oath required. For personal study only.

✦ Synopsis

This is a survey/tutorial paper on data compression using the technique of subband coding. This is widely used in practice, for example, in the MPEG audio coder. A subband coder has two main components: a "lter bank that decomposes the source into components, usually with respect to de"ned frequency bands; and a bank of quantizers. Without the quantizers, the subband coder}decoder is a linear periodically time-varying discrete-time system, and hence falls into the class of multirate digital signal processing systems. The paper reviews the theory of such systems, studies the perfect reconstruction problem and a variant of it, reviews subband coding theory for a stationary input signal, and describes recent work for cyclostationary signals.

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