Ernst, Daniel und Goudarzi, Armin und Geisler, Reinhard und Philipp, Florian und Ahlefeldt, Thomas und Spehr, Carsten (2024) Enhancing Aeroacoustic Wind Tunnel Studies through Massive Channel Upscaling with MEMS Microphones. In: 10th Berlin Beamforming Conference 2024 (S05), Seiten 1-20. 10th Berlin Beamforming Conference 2024, 2024-06-10 - 2024-06-11, Berlin, Germany.
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Offizielle URL: https://www.bebec.eu/fileadmin/bebec/downloads/bebec-2024/papers/BeBeC-2024-S05.pdf
Kurzfassung
This paper presents a large 6~m x 3~m aperture 7200 MEMS microphone array. The array is designed so that sub-arrays with optimized point spread functions can be used for beamforming and thus, enable the research of source directivity in wind tunnel facilities. The total array consists of modular 800 microphone panels, each consisting of four unique PCB board designs. This modular architecture allows for the time-synchronized measurement of an arbitrary number of panels and thus, aperture size and total number of sensors. The panels can be installed without a gap so that the array's microphone pattern avoids high sidelobes in the point spread function. The array's capabilities are evaluated on a 1:9.5 airframe half model in an open wind tunnel at DNW-NWB. The total source emission is quantified and the directivity is evaluated with beamforming. Additional far-field microphones are employed to validate the results.
elib-URL des Eintrags: | https://elib.dlr.de/204984/ | ||||||||||||||||||||||||||||
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Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||||||||||||||||||
Zusätzliche Informationen: | Online-Veröffentlichung | ||||||||||||||||||||||||||||
Titel: | Enhancing Aeroacoustic Wind Tunnel Studies through Massive Channel Upscaling with MEMS Microphones | ||||||||||||||||||||||||||||
Autoren: |
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Datum: | Juni 2024 | ||||||||||||||||||||||||||||
Erschienen in: | 10th Berlin Beamforming Conference 2024 | ||||||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||||||
Open Access: | Nein | ||||||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||||||
In SCOPUS: | Nein | ||||||||||||||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||||||||||||||
Seitenbereich: | Seiten 1-20 | ||||||||||||||||||||||||||||
Name der Reihe: | Program/Proceedings | ||||||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||||||
Stichwörter: | beamforming, clean-sc | ||||||||||||||||||||||||||||
Veranstaltungstitel: | 10th Berlin Beamforming Conference 2024 | ||||||||||||||||||||||||||||
Veranstaltungsort: | Berlin, Germany | ||||||||||||||||||||||||||||
Veranstaltungsart: | internationale Konferenz | ||||||||||||||||||||||||||||
Veranstaltungsbeginn: | 10 Juni 2024 | ||||||||||||||||||||||||||||
Veranstaltungsende: | 11 Juni 2024 | ||||||||||||||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||||||||||||||
HGF - Programm: | Luftfahrt | ||||||||||||||||||||||||||||
HGF - Programmthema: | Effizientes Luftfahrzeug | ||||||||||||||||||||||||||||
DLR - Schwerpunkt: | Luftfahrt | ||||||||||||||||||||||||||||
DLR - Forschungsgebiet: | L EV - Effizientes Luftfahrzeug | ||||||||||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | L - Virtuelles Flugzeug und Validierung | ||||||||||||||||||||||||||||
Standort: | Göttingen | ||||||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Aerodynamik und Strömungstechnik > Experimentelle Verfahren, GO | ||||||||||||||||||||||||||||
Hinterlegt von: | Micknaus, Ilka | ||||||||||||||||||||||||||||
Hinterlegt am: | 11 Jul 2024 15:50 | ||||||||||||||||||||||||||||
Letzte Änderung: | 11 Jul 2024 16:05 |
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