Sound field separation for planar sources facing a parallel reflector

Elias Zea (Corresponding author), Ines Lopez Arteaga

Research output: Contribution to journalArticleAcademicpeer-review

6 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)181-191
Number of pages11
JournalApplied Acoustics
Volume149
DOIs
Publication statusPublished - 1 Jun 2019

Keywords

  • NAH
  • Planar sources
  • Reverberant environments
  • Sound field separation

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