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    Robust beamformer design against mismatch in microphone characteristics and acoustic environment

    Access Status
    Fulltext not available
    Authors
    Nahma, L.
    Dam, Hai Huyen Heidi
    Nordholm, Sven
    Date
    2018
    Type
    Conference Paper
    
    Metadata
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    Citation
    Nahma, L. and Dam, H.H.H. and Nordholm, S. 2018. Robust beamformer design against mismatch in microphone characteristics and acoustic environment, pp. 76-80.
    Source Title
    16th International Workshop on Acoustic Signal Enhancement, IWAENC 2018 - Proceedings
    DOI
    10.1109/IWAENC.2018.8521248
    ISBN
    9781538681510
    School
    School of Electrical Engineering, Computing and Mathematical Science (EECMS)
    URI
    http://hdl.handle.net/20.500.11937/74462
    Collection
    • Curtin Research Publications
    Abstract

    © 2018 IEEE. Broadband beamformers are known to be sensitive not only to mismatches in microphone characteristics but also in the acoustic environment. In this work, we propose a robust broadband beamformer design using weighted least square optimization technique, which takes into account the room reverberation as well as the mismatches in microphone gain and phase characteristics. The robust design procedure optimize the mean performance of the beamformer with the room impulse response estimated using the image source method. Design examples demonstrate performance improvement in terms of significant reduction in error sensitivity for the robust design formulation.

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