The Far-Field Equatorial Array for Binaural Rendering
Paper i proceeding, 2021

We present a method for obtaining a spherical harmonic representation of a sound field based on a microphone array along the equator of a rigid spherical scatterer. The two-dimensional plane wave de-composition of the incoming sound field is computed from the microphone signals. The influence of the scatterer is removed under the assumption of distant sound sources, and the result is converted to a spherical harmonic (SH) representation, which in turn can be rendered binaurally. The approach requires an order of magnitude fewer microphones compared to conventional spherical arrays that operate at the same SH order at the expense of not being able to accurately represent non-horizontally-propagating sound fields. Although the scattering removal is not perfect at high frequencies at low harmonic orders, numerical evaluation demonstrates the effectiveness of the approach.

plane wave decomposition

spherical harmonics

Microphone array

binaural rendering

HRTFs

Författare

Jens Ahrens

Chalmers, Arkitektur och samhällsbyggnadsteknik, Teknisk akustik

Hannes Helmholz

Chalmers, Arkitektur och samhällsbyggnadsteknik, Teknisk akustik

David Lou Alon

Sebastia V. Amengual Gari

ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings

15206149 (ISSN)

IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)
Toronto, Canada,

Binaural reproduktion av inspelningar med sfäriska mikrofonsystem

Oculus Inc., 2018-05-01 -- 2019-04-30.

Styrkeområden

Informations- och kommunikationsteknik

Ämneskategorier

Telekommunikation

Signalbehandling

DOI

10.1109/ICASSP39728.2021.9414368

Relaterade dataset

Audio examples accompanying the paper "The Far-Field Equatorial Array for Binaural Rendering", IEEE ICASSP (2021) [dataset]

DOI: 10.5281/zenodo.4807499 URI: https://doi.org/10.5281/zenodo.4807499

Mer information

Skapat

2021-06-26