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Algorithm For Jointly Optimized Analysis And Synthesis Fir Filter Banks (1999)
| Venue: | in Proc. for the 6th IEEE International Conference on Electronics, Circuits and Systems, Paphos |
BibTeX
@INPROCEEDINGS{And99algorithmfor,
author = {Are Hjrungnes And and Are Hjrungnes and Tor A. Ramstad},
title = {Algorithm For Jointly Optimized Analysis And Synthesis Fir Filter Banks},
booktitle = {in Proc. for the 6th IEEE International Conference on Electronics, Circuits and Systems, Paphos},
year = {1999}
}
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Abstract
An algorithm for jointly optimizing uniform analysis and synthesis FIR filter banks for a given input power spectral density is proposed. The FIR subband coder is optimized with respect to the minimum block mean square error between the output and the input signals under a bit constraint. The subband quantizers are modeled as additive, signal-independent, white noise sources. Illustrative examples showing the system performance as well as filter magnitude and impulse responses are given. The performance results are compared to the rate distortion curves, the performance for the optimal transform coder, and the optimal filter bank with unconstrained length filters. The use of two subbands in a filter bank having filters of length six in all the filters, gives 1.42 dB better system performance compared to a signal-adaptive, linear phase, biorthogonal filter bank, when coding a Gaussian AR(1) source with correlation coefficient 0.95 at 2.75 bits/sample. 1. INTRODUCTION Filter banks are ...
Keyphrases
synthesis fir filter bank jointly optimized analysis system performance filter magnitude biorthogonal filter bank uniform analysis subband quantizers optimal transform coder rate distortion curve optimal filter bank fir subband coder correlation coefficient bit constraint performance result gaussian ar white noise source minimum block mean square error impulse response input power spectral density illustrative example unconstrained length filter filter bank input signal bit sample introduction filter bank linear phase
