Multiple scattering ambisonics: three-dimensional sound field estimation using interacting spheres
Sound
2021-08-17 v2 Audio and Speech Processing
Abstract
Rigid spherical microphone arrays (RSMAs) have been widely used in ambisonics sound field recording. While it is desired to combine the information captured by a grid of densely arranged RSMAs for expanding the area of accurate reconstruction, or sweet-spots, this is not trivial due to inter-array interference. Here we propose multiple scattering ambisonics, a method for three-dimensional ambisonics sound field recording using multiple acoustically interacting RSMAs. Numerical experiments demonstrate the sweet-spot expansion realized by the proposed method. The proposed method can be used with existing RSMAs as building blocks and opens possibilities including higher degrees-of-freedom spatial audio.
Cite
@article{arxiv.2106.07157,
title = {Multiple scattering ambisonics: three-dimensional sound field estimation using interacting spheres},
author = {Shoken Kaneko and Ramani Duraiswami},
journal= {arXiv preprint arXiv:2106.07157},
year = {2021}
}