Volumetric reconstruction of the sound field in a room from arbitrary acousto-optic projections

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Abstract

Acousto-optic sensing methods enable the measurement of sound, using the interaction between sound and light as the sensing principle. Specifically, acousto-optic tomography enables the reconstruction of sound fields across space and time. However, existing reconstruction methods have constrained the applicability of the principle to controlled laboratory conditions, due to various measurement restrictions. In the present study, we make use of a new spatial reconstruction approach that makes it possible to reconstruct a sound field from a set of arbitrary projections, enabling the in situ capture of sound fields in conventional spaces, such as rooms and enclosures. We examine how the proposed approach enables to measure a sound field in a room, and how the sensing principle can be used to reconstruct the sound pressure field, particle velocity vector and the flow of
acoustic intensity in a three-dimensional space. Thus, a complete volumetric reconstruction of the sound field is obtained from sets of arbitrary acousto-optic projection measurements.
Original languageEnglish
Title of host publicationProceedings of the 24th International Congress on Acoustics
Number of pages9
Publication date2022
Publication statusPublished - 2022
Event24th International Congress on Acoustics - Hwabaek International Convention Center, Gyeongju, Korea, Republic of
Duration: 24 Oct 202228 Oct 2022
Conference number: 24
https://ica2022korea.org

Conference

Conference24th International Congress on Acoustics
Number24
LocationHwabaek International Convention Center
Country/TerritoryKorea, Republic of
CityGyeongju
Period24/10/202228/10/2022
Internet address

Keywords

  • Acousto-optics
  • Sound field analysis
  • Sound field reconstruction
  • Holography
  • Tomography

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