Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/6523
Title: Design of broadband beamformers with low complexity
Authors: Feng, Z
Yiu, CKF 
Teo, KL
Nordholm, S
Keywords: Algorithms
Beamforming
Design
Integer programming
Issue Date: 9-Mar-2012
Publisher: Springer
Source: EURASIP Journal on advances in signal processing, 9 Mar. 2012, 2012:62, p. 1-11 How to cite?
Journal: EURASIP Journal on advances in signal processing 
Abstract: In this article, we consider the design of broadband beamformers with low complexity. In fact, the design problem is multi-objective in nature, trading off between speech distortion and noise suppression. Finding a balance between these two objectives is important in order to achieve a desired sound quality. These measures are introduced as the objectives here. The design can then be obtained via a bi-objective integer programming problem, where the coefficients of the filters are expressed as sums of signed powers-of-two terms. We study two different integer spaces and penalty functions for solving the problem. Then, an algorithm based on a discrete filled function is developed for finding the optimal design. In order to illustrate the effectiveness of the algorithm, real data is used and two broadband beamformers are demonstrated.
URI: http://hdl.handle.net/10397/6523
ISSN: 1687-6180
DOI: 10.1186/1687-6180-2012-62
Rights: © 2012 Feng et al; licensee Springer. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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