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    Design of broadband beamformers with low complexity

    189702_73510_Design_of_broadband_beamformers_with_low_complexity.pdf (347.9Kb)
    Access Status
    Open access
    Authors
    Feng, Zhi
    Yiu, Ka Fai
    Teo, Kok Lay
    Nordholm, Sven
    Date
    2012
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Feng, Zhiguo and Yiu, Cedric Ka Fai and Teo, Kok Lay and Nordholm, Sven. 2012. Design of broadband beamformers with low complexity. EURASIP Journal on Advances in Signal Processing. 2012:62.
    Source Title
    EURASIP Journal on Advances in Signal Processing
    DOI
    10.1186/1687-6180-2012-62
    ISSN
    1687-6180
    Remarks

    This article is published under the Open Access publishing model and distributed under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/2.0/ Please refer to the licence to obtain terms for any further reuse or distribution of this work.

    URI
    http://hdl.handle.net/20.500.11937/33863
    Collection
    • Curtin Research Publications
    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.

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