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Microphone Arrays pp 39–60Cite as

Post-Filtering Techniques

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

Abstract

In the context of microphone arrays, the term post-filtering denotes the post-processing of the array output by a single-channel noise suppression filter. A theoretical analysis shows that Wiener post-filtering of the output of an optimum distortionless beamformer provides a minimum mean squared error solution. We examine published methods for post-filter estimation and develop a new algorithm. A simulation system is presented to compare the performance of the discussed algorithms.

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Author information

Authors and Affiliations

  1. Aureca GmbH, Bremen, Germany

    K. Uwe Simmer

  2. Houpert Digital Audio, Bremen, Germany

    Joerg Bitzer

  3. France Télécom R&D, Lannion, France

    Claude Marro

Authors
  1. K. Uwe Simmer
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  2. Joerg Bitzer
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  3. Claude Marro
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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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Simmer, K.U., Bitzer, J., Marro, C. (2001). Post-Filtering Techniques. In: Brandstein, M., Ward, D. (eds) Microphone Arrays. Digital Signal Processing. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-04619-7_3

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  • DOI: https://doi.org/10.1007/978-3-662-04619-7_3

  • 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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