Design of Circular Differential Microphone Arrays

  • Jacob Benesty
  • Jingdong Chen
  • Israel Cohen

Part of the Springer Topics in Signal Processing book series (STSP, volume 12)

Table of contents

  1. Front Matter
    Pages i-ix
  2. Jacob Benesty, Jingdong Chen, Israel Cohen
    Pages 1-13
  3. Jacob Benesty, Jingdong Chen, Israel Cohen
    Pages 15-31
  4. Jacob Benesty, Jingdong Chen, Israel Cohen
    Pages 33-52
  5. Jacob Benesty, Jingdong Chen, Israel Cohen
    Pages 53-80
  6. Jacob Benesty, Jingdong Chen, Israel Cohen
    Pages 81-90
  7. Jacob Benesty, Jingdong Chen, Israel Cohen
    Pages 91-111
  8. Jacob Benesty, Jingdong Chen, Israel Cohen
    Pages 113-142
  9. Jacob Benesty, Jingdong Chen, Israel Cohen
    Pages 143-164
  10. Back Matter
    Pages 165-166

About this book

Introduction

Recently, we proposed a completely novel and efficient way to design differential beamforming algorithms for linear microphone arrays. Thanks to this very flexible approach, any order of differential arrays can be designed. Moreover, they can be made robust against white noise amplification, which is the main inconvenience in these types of arrays. The other well-known problem with linear arrays is that electronic steering is not really feasible.

 In this book, we extend all these fundamental ideas to circular microphone arrays and show that we can design small and compact differential arrays of any order that can be electronically steered in many different directions and offer a good degree of control of the white noise amplification problem, high directional gain, and frequency-independent response. We also present a number of practical examples, demonstrating that differential beamforming with circular microphone arrays is likely one of the best candidates for applications involving speech enhancement (i.e., noise reduction and dereverberation). Nearly all of the material presented is new and will be of great interest to engineers, students, and researchers working with microphone arrays and their applications in all types of telecommunications, security and surveillance contexts.

Keywords

Cardioid Circular Differential Microphone Arrays Differential Beamforming Dipole Directivity Factor Directivity Pattern Hypercardioid Supercardioid Superdirective Beamforming White Noise Gain

Authors and affiliations

  • Jacob Benesty
    • 1
  • Jingdong Chen
    • 2
  • Israel Cohen
    • 3
  1. 1.INRS-EMTUniversity of QuebecMontrealCanada
  2. 2.Northwestern Polytechnical UniversityXi’anChina
  3. 3.Department of Electrical EngineeringTechnion, Israel Institute of TechnologyHaifaIsrael

Bibliographic information

  • DOI https://doi.org/10.1007/978-3-319-14842-7
  • Copyright Information Springer International Publishing Switzerland 2015
  • Publisher Name Springer, Cham
  • eBook Packages Engineering
  • Print ISBN 978-3-319-14841-0
  • Online ISBN 978-3-319-14842-7
  • Series Print ISSN 1866-2609
  • Series Online ISSN 1866-2617
  • About this book
Industry Sectors
Pharma
Automotive
Biotechnology
Electronics
Telecommunications
Consumer Packaged Goods
Aerospace
Oil, Gas & Geosciences