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Robust Adaptive Beamforming

  • Chapter
Microphone Arrays

Part of the book series: Digital Signal Processing ((DIGSIGNAL))

Abstract

This chapter presents robust adaptive beamforming techniques designed specifically for microphone array applications. The basics of adaptive beamformers are first reviewed with the Griffiths-Jim beamformer (GJBF). Its robustness problems caused by steering vector errors are then discussed with some conventionally proposed robust beamformers. As better solutions to the conventional robust beamformers, GJBFs with an adaptive blocking matrix are presented in the form of a microphone array. Simulation results and real-time evaluation data show that a new robust adaptive microphone array achieves improved robustness against steering vector errors. Good sound quality of the output signal is also confirmed by a subjective evaluation.

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Author information

Authors and Affiliations

  1. NEC Media Research Labs, Kawasaki, Japan

    Osamu Hoshuyama & Akihiko Sugiyama

Authors
  1. Osamu Hoshuyama
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  2. Akihiko Sugiyama
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Editor information

Editors and Affiliations

  1. Div. of Eng. and Applied Scciences, Harvard University, 33 Oxford Street, 02138, Cambridge, MA, USA

    Michael Brandstein

  2. Dept. of Electrical Engineering, Imperial College, Exhibition Road, SW7 2AZ, London, GB

    Darren Ward

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© 2001 Springer-Verlag Berlin Heidelberg

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Hoshuyama, O., Sugiyama, A. (2001). Robust Adaptive Beamforming. In: Brandstein, M., Ward, D. (eds) Microphone Arrays. Digital Signal Processing. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-04619-7_5

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  • DOI: https://doi.org/10.1007/978-3-662-04619-7_5

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-07547-6

  • Online ISBN: 978-3-662-04619-7

  • eBook Packages: Springer Book Archive

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