Enabling Head-Tracking for Binaural Sound Reproduction Based on Bilateral Ambisonics

Or Berebi, Boaz Rafaely, Zamir Ben-Hur, David Lou Alon

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Recent progress in virtual and augmented reality technology has highlighted the need for high-quality spatial sound recording and reproduction for headphones playback. This process of high-quality binaural reproduction typically requires a high-order spatial representation of the sound field, which, in turn, demands a complex recording system and a large number of microphones. In an attempt to overcome this obstacle, a recent study presented a method, denoted Bilateral Ambisonics, that enables the rendering of high-quality binaural signals in terms of spatial perception. This is done by capturing the sound field with two low-order microphone arrays located at the assumed position of the listener's ears. Currently, however, binaural reproduction with Bilateral Ambisonics does not support head tracking. In this paper, a mathematical model for enabling three-degrees-of-freedom head-tracking in the context of Bilateral Ambisonics is developed. The method is based on rotation and translation operations, and offers insights into bilateral head-tracking performance limits. The method is studied numerically by computer simulations.

Original languageEnglish
Title of host publication2021 Immersive and 3D Audio
Subtitle of host publicationFrom Architecture to Automotive, I3DA 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665409988
DOIs
StatePublished - 1 Jan 2021
Event2021 Immersive and 3D Audio: From Architecture to Automotive, I3DA 2021 - Bologna, Italy
Duration: 8 Sep 202110 Sep 2021

Publication series

Name2021 Immersive and 3D Audio: From Architecture to Automotive, I3DA 2021

Conference

Conference2021 Immersive and 3D Audio: From Architecture to Automotive, I3DA 2021
Country/TerritoryItaly
CityBologna
Period8/09/2110/09/21

Keywords

  • Ambisonics
  • Binaural Reproduction
  • Head-tracking
  • Spatial Audio
  • Spherical-Harmonics

ASJC Scopus subject areas

  • Automotive Engineering
  • Media Technology
  • Architecture
  • Acoustics and Ultrasonics
  • Arts and Humanities (miscellaneous)
  • Conservation

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