Navigable Reconstruction of Reverberant Sound Fields Using Distributed Microphone Arrays

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Abstract

The reconstruction of sound fields over large domains is a challenging task that often requires a large number of measurements. To overcome this challenge, sound field reconstruction methods enable sound interpolation and extrapolation from a reduced number of measurements. In this study, we propose a method that leverages the generalisable time structure of a room impulse response. The approach accounts for the different structure of the early and late parts of the room impulse response as well as the reflection density and energy decay over time. In the early part, the strongest reflections are localised and modelled with a cluster of weighted monopoles. For the late part, kernel methods are used to reconstruct the sound field based on its statistical properties and temporal decay. The prediction ability of the method is compared to a classical plane wave reconstruction, based on experimental measurements in an auditorium. The results indicate that the approach is suited to reconstructing sound fields over large domains, achieving a fair
reconstruction across space.
Original languageEnglish
Title of host publicationProceedings of the 2nd International Conference on Immersive and 3D Audio
Number of pages8
PublisherIEEE
Publication date2023
ISBN (Print)979-8-3503-1105-1
DOIs
Publication statusPublished - 2023
Event2nd International Conference on Immersive and 3D Audio - Bologna University - School of Engineering and Architecture, Bologna, Italy
Duration: 5 Sept 20237 Sept 2023
https://www.i3da2023.org/

Conference

Conference2nd International Conference on Immersive and 3D Audio
LocationBologna University - School of Engineering and Architecture
Country/TerritoryItaly
CityBologna
Period05/09/202307/09/2023
Internet address

Keywords

  • Sound field reconstruction
  • Room impulse response
  • Spatial audio
  • 6DoF
  • Kernel methods
  • Spherical microphone array

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