A 16-channel low-power non-uniform spaced filter bank core for digital hearing aids

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A 16-channel low-power non-uniform spaced filter bank core for digital hearing aids

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Title: A 16-channel low-power non-uniform spaced filter bank core for digital hearing aids
Author: Chong, Kwen-Siong; Gwee, Bah Hwee; Chang, Joseph Sylvester
Copyright year: 2006
Abstract: We describe a 16-channel critical-like spaced, high stopband attenuation (≥60 dB, 109th X 16-order), micropower (247.5 W@1.1 V, 0.96 MHz), small integrated circuit (IC) area (1.62 mm2@0.35- m CMOS) finite impulse response filter bank core for power-critical hearing aids. We achieve the low-power and small IC area attributes by our proposed common pre-computational unit to generate a set of pre-calculated intermediate values that is shared by all 16 channels. We also take advantage of the consecutive zeros in the coefficients of the filter channels, allowing the multiplexers therein to be simplified. We show that our design is very competitive compared to reported designs, and with the advantages of higher stopband attenuation and linear phase frequency response. Compared to a design using the usual approach, our design features 47% lower power dissipation and 37% smaller IC area.
Subject: DRNTU::Engineering::Electrical and electronic engineering
Type: Journal Article
Series/ Journal Title: IEEE transactions on circuits and systems-II: express briefs
School: School of Electrical and Electronic Engineering
Rights: © 2006 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. This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. http://www.ieee.org/portal/site.
Version: Published version

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