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Proceedings Paper

Synthesis filters design for coding gain in oversampled filter banks
Author(s): Fabrice Labeau
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Paper Abstract

In this paper, we study the impact of the design freedom brought about by oversampling in Perfect Reconstruction oversampled filter banks, on the choice of synthesis filters that maximize the coding gain. In particular, based on the expression of the coding gain for the oversampled case, we show the dependency of the coding gain on both analysis and synthesis filters. We explore how the choice of synthesis filters can affect the coding gain, given a fixed set of analysis filters. We show that the para-pseudo-inverse is a good choice for the maximization of the coding gain when the corresponding analysis filters have been optimized for coding gain under critical sampling, or show a good frequency selectivity.

Paper Details

Date Published: 16 September 2005
PDF: 9 pages
Proc. SPIE 5915, Mathematics of Data/Image Coding, Compression, and Encryption VIII, with Applications, 59150C (16 September 2005); doi: 10.1117/12.613451
Show Author Affiliations
Fabrice Labeau, McGill Univ. (Canada)

Published in SPIE Proceedings Vol. 5915:
Mathematics of Data/Image Coding, Compression, and Encryption VIII, with Applications
Mark S. Schmalz, Editor(s)

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