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Directivity Based Multichannel Audio Signal Processing For Microphones in Noisy Acoustic Environments

  • Book
  • © 2019

Overview

Authors:
  1. Simon Grimm

    1. Stuttgart, Germany

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  • Dissertation zum Thema Sprachsignalverarbeitung

  • 3328 Accesses

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Table of contents (7 chapters)

  1. Front Matter

    Pages I-XI
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  2. Introduction

    • Simon Grimm
    Pages 1-5

  3. Noise Reduction using Multichannel Signal Processing Approaches

    • Simon Grimm
    Pages 7-24

  4. The Generalized Multichannel Wiener Filter

    • Simon Grimm
    Pages 25-31

  5. Directivity Based Reference for the Generalized Multichannel Wiener Filter

    • Simon Grimm
    Pages 33-59

  6. Reference for the Binaural Multichannel Wiener Filter

    • Simon Grimm
    Pages 61-79

  7. Wind Noise Reduction for a Closely Spaced Microphone Array

    • Simon Grimm
    Pages 81-97

  8. Background Noise Simulation based on MIMO Equalization

    • Simon Grimm
    Pages 99-109

  9. Back Matter

    Pages 111-127
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Keywords

About this book

Simon Grimm examines new multi-microphone signal processing strategies that aim to achieve noise reduction and dereverberation. Therefore, narrow-band signal enhancement approaches are combined with broad-band processing in terms of directivity based beamforming. Previously introduced formulations of the multichannel Wiener filter rely on the second order statistics of the speech and noise signals. The author analyses how additional knowledge about the location of a speaker as well as the microphone arrangement can be used to achieve further noise reduction and dereverberation.

Authors and Affiliations

  • Stuttgart, Germany

    Simon Grimm

About the author

Simon Grimm was a research assistant at the Institute of System Dynamics at the HTWG Konstanz, Germany, from October 2014 to March 2018. During his research period, he was working in the area of speech signal processing for multichannel microphone arrangements. He finished his Ph.D. in June 2018. Currently he is employed as a signal processing engineer at a German audio equipment manufacturer.

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