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Article Dans Une Revue Journal of the Acoustical Society of America Année : 2015

Acoustic beamforming through a thin plate using vibration measurements

Résumé

The aim of this paper is to propose a methodology to localize acoustic sources from the measurement of airborne induced vibrations of a thin structure. Targeted applications are the identification of acoustic sources through a thin wall , with a potential filtration of the incident field , which may be of practical interest for instance when identifying exterior acoustic sources from the inside of a moving vehicle. Two methods are coupled here to achieve this purpose : the Force Analysis Technique (FAT) , used to identify the parietal pressure field exciting the thin structure from vibration measurements , and beamforming , used for the localization of acoustic sources from the (FAT-) identified parietal pressure. The coupling of the two methods is studied first from a theoretical point of view , and an experimental proof of concept is then presented , showing the feasibility and relevance of the proposed approach .
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Dates et versions

hal-01176855 , version 1 (17-07-2015)

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Q. Leclere, Christophe Picard. Acoustic beamforming through a thin plate using vibration measurements. Journal of the Acoustical Society of America, 2015, 137 (6), pp.3385-3392. ⟨10.1121/1.4921272⟩. ⟨hal-01176855⟩
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