Sound field separation for planar sources facing a parallel reflector

Elias Zea (Corresponding author), Ines Lopez Arteaga

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Uittreksel

We consider the problem of separating and reconstructing the sound field radiated by a planar source, e.g. a vibrating plate, that faces a parallel reflector. For this purpose we propose a Fourier-based technique to process near-field microphone array measurements that are performed on a single plane between the plate and the reflector. A closed-form expression is derived in the wavenumber domain to recover the free-space sound field radiated by the plate. The fundamental assumption is that the plate scatters sound in a locally-reacting fashion. Overall, provided the admittances of the plate and the reflecting surface are known, the results demonstrate that it is possible to recover the free-field sound radiated by the plate with a reasonable accuracy.

Originele taal-2Engels
Pagina's (van-tot)181-191
Aantal pagina's11
TijdschriftApplied Acoustics
Volume149
DOI's
StatusGepubliceerd - 1 jun 2019

Vingerafdruk

sound fields
reflectors
electrical impedance
microphones
near fields
acoustics

Citeer dit

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Sound field separation for planar sources facing a parallel reflector. / Zea, Elias (Corresponding author); Arteaga, Ines Lopez.

In: Applied Acoustics, Vol. 149, 01.06.2019, blz. 181-191.

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

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