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Beam forming methods in microphone array measurements Theory, practice and limitations (Part I and II)

Koop, Lars (2007) Beam forming methods in microphone array measurements Theory, practice and limitations (Part I and II). In: Experimental Aeroacoustics VKI LS 2007-01. von Karman Institute for Fluid Dynamics. pp. 1-78. ISBN 13 978-2-930389-70-2. ISSN 0377-8312

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Abstract

The delay-and-sum beamformer as a standard algorithm in microphone array analysis is described in this lecture. The algorithm is described for time-domain and for frequency-domain calculations. The dependency of the microphone array performance on the array design is discussed and a design strategy for arrays is proposed. In an extensive chapter the evaluation of closed and open test-section microphone-array measurements using the delay-and-sum beamformer is described. The introduction of advanced deconvolution algorithms to enhance microphone array results concludes the lecture.

Document Type:Contribution to a Collection
Title:Beam forming methods in microphone array measurements Theory, practice and limitations (Part I and II)
Authors:
AuthorsInstitution or Email of Authors
Koop, LarsUNSPECIFIED
Date:2007
Journal or Publication Title:Experimental Aeroacoustics
Refereed publication:Yes
In ISI Web of Science:No
Page Range:pp. 1-78
Editors:
EditorsEmail
Riethmuller, M.L.UNSPECIFIED
Lema, M.R.UNSPECIFIED
Publisher:von Karman Institute for Fluid Dynamics
Series Name:VKI LS 2007-01
ISSN:0377-8312
ISBN:13 978-2-930389-70-2
Status:Published
Keywords:Microphone array, delay-and-sum beamformer, array performance, open test-section, closed test-section, deconvolution, DAMAS, noise maps, frequency-domain analysis
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flight Physics
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Experimental Methods
Deposited By: Ilka Micknaus
Deposited On:30 May 2007
Last Modified:27 Apr 2009 13:15

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