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Minimization of Quantization Noise amplification in 2-channel IIR Bi-orthogonal Filter Bank

Tripathi, Santosh Kumar and Makur, Anamitra (2003) Minimization of Quantization Noise amplification in 2-channel IIR Bi-orthogonal Filter Bank. In: 2003 Joint Conference of the Fourth International Conference on Information, Communications and Signal Processing and the Fourth Pacific Rim Conference on Multimedia., 15-18 December, Singapore, Vol. 1 56-60.

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Abstract

In this work we look at the class of uniform biorthogonal FIR, IIK and hybrid filter banks with M = 2 channels. when Quntization noise passes through synthesis filter bank it gets amplified, due to the multiplication of synthesis filter norms to the quantization noise in each channel. Better compression, or higher coding gain, will be achieved if the quantization noise amplification is reduced. Scaling down of the synthesis filters will not work as to maintain the property of perfect reconstruction we have to scale up the analysis filter bank causing no improvement. Minimization of such amplification has been proposed earlier for FIR filter banks. We are proposing an implementable and stable coloring filter for IIR filter bank which is the optimum coloring filter for the assumed filter structure. We deal with an example of a hybrid filter bank based on all pass delay chain structure.

Item Type: Conference Paper
Additional Information: ©2003 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited: 30 Nov 2004
Last Modified: 19 Sep 2010 04:12
URI: http://eprints.iisc.ernet.in/id/eprint/309

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