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    Design of Robust Steerable Broadband Beamformers incorporating Microphone Gain and Phase Error Characteristics

    Access Status
    Fulltext not available
    Authors
    Lai, Chiong
    Nordholm, Sven
    Leung, Yee-hong
    Date
    2011
    Type
    Conference Paper
    
    Metadata
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    Citation
    Lai, Chiong-Ching and Nordholm, Sven and Leung, Yee-Hong. 2011. Design of Robust Steerable Broadband Beamformers Incorporating Microphone Gain and Phase Error Characteristics, in Chambers, J.A. and van der Veen, A. (ed), ICASSP 2011, Aug 22-27 2011, pp. 101-104. Prague, Czech Republic: IEEE.
    Source Title
    2011 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP),
    Source Conference
    ICASSP 2011
    DOI
    10.1109/ICASSP.2011.5946338
    ISSN
    1520-6149
    School
    Department of Electrical and Computer Engineering
    URI
    http://hdl.handle.net/20.500.11937/11778
    Collection
    • Curtin Research Publications
    Abstract

    Beamformers are known to be sensitive to errors and mismatches in their array elements. This paper proposes a robust steerable broadband beamformer design using the Farrow structure and for arbitrary array geometry. The design formulation includes stochastic models describing the flexibility for microphone errors. This method establishes a direct relationship in controlling the robustness specification in the design from given microphone characteristics. The robust design procedure optimises the mean performance of the beamformer. Design examples show significant reduction in error sensitivity in the robust design formulation.

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