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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: |
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| Date: | 2007 | ||||||
| Journal or Publication Title: | Experimental Aeroacoustics | ||||||
| Refereed publication: | Yes | ||||||
| In ISI Web of Science: | No | ||||||
| Page Range: | pp. 1-78 | ||||||
| Editors: |
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| 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 | ||||||
| HGF - Program: | Aeronautics | ||||||
| HGF - Program Themes: | L AR - 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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