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Koop, Lars and Ehrenfried, Klaus (2008) Microphone-array processing for wind-tunnel measurements with strong background noise. 14th AIAA/CEAS Aeroacoustics Conference, 2008-05-05 - 2008-05-07, Vancouver (Canada).
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Official URL: http://www.aiaa.org
Abstract
During the last decade, microphone arrays became a standard tool to study aeroacoustic sources. Nowadays, arrays are frequently applied in fly-over measurements<sup>1</sup> and wind tunnel testing.<sup>2</sup> To improve the resolution of the arrays and to reduce disturbing side lobes in the measured source maps, sophisticated deconvolution methods were proposed<sup>3-8</sup> in recent years. First, these methods were tested using synthetic data or data from experiments with generic configurations. <sup>8</sup> In a next step the methods have to be applied to real experiments. This is done in the present paper. It is tested, if the deconvolution works also under difficult conditions, and if the findings of the simulations using artificial background noise<sup>7</sup> can be confirmed in case of real data.
| Item URL in elib: | https://elib.dlr.de/53800/ | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Document Type: | Conference or Workshop Item (Speech, Paper) | |||||||||
| Title: | Microphone-array processing for wind-tunnel measurements with strong background noise | |||||||||
| Authors: |
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| Date: | 2008 | |||||||||
| Refereed publication: | No | |||||||||
| Open Access: | No | |||||||||
| Gold Open Access: | No | |||||||||
| In SCOPUS: | No | |||||||||
| In ISI Web of Science: | No | |||||||||
| Volume: | Session 16-AA-16 | |||||||||
| Page Range: | pp. 1-20 | |||||||||
| Series Name: | AIAA Conference Proceedings CD-ROM | |||||||||
| Status: | Published | |||||||||
| Keywords: | microphone-array, closed test-section, deconvolution, DAMAS, aeroacoustic noise sources, SCCH-model, BiClean, background noise | |||||||||
| Event Title: | 14th AIAA/CEAS Aeroacoustics Conference | |||||||||
| Event Location: | Vancouver (Canada) | |||||||||
| Event Type: | international Conference | |||||||||
| Event Dates: | 2008-05-05 - 2008-05-07 | |||||||||
| Organizer: | AIAA | |||||||||
| HGF - Research field: | Aeronautics, Space and Transport (old) | |||||||||
| HGF - Program: | Aeronautics | |||||||||
| HGF - Program Themes: | Aircraft Research (old) | |||||||||
| DLR - Research area: | Aeronautics | |||||||||
| DLR - Program: | L AR - Aircraft Research | |||||||||
| DLR - Research theme (Project): | L - Flight Physics (old) | |||||||||
| Location: | Göttingen | |||||||||
| Institutes and Institutions: | Institute of Aerodynamics and Flow Technology > Helicopters Institute of Aerodynamics and Flow Technology > Experimental Methods | |||||||||
| Deposited By: | Micknaus, Ilka | |||||||||
| Deposited On: | 13 Jun 2008 | |||||||||
| Last Modified: | 27 Apr 2009 14:52 |
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