Binaural reproduction using bilateral ambisonics

Zamir Ben-Hur, David Lou Alon, Ravish Mehra, Boaz Rafaely

Research output: Contribution to conferencePaperpeer-review

1 Scopus citations

Abstract

Binaural reproduction plays an important role in virtual and augmented reality applications. The rendering of binaural signals using Spherical-Harmonics (SH) representation gives the flexibility to control the reproduced binaural signals, by using algorithms that operate directly in the SH domain. However, in most practical cases, the binaural reproduction is order-limited, which introduces truncation error that has a detrimental effect on the perception of the reproduced signals. A recent study showed that pre-processing of the Head-Related Transfer Function (HRTF) by ear-alignment reduces its effective SH order. In this paper, a method to incorporate the ear-aligned HRTF into the binaural reproduction process using a new Ambisonics representation of the sound field formulated at the two ears, denoted here as Bilateral Ambisonics, is presented. Application of this method yields a significant improvement in the perceived audio quality of order-limited binaural signals.

Original languageEnglish
StatePublished - 1 Jan 2020
Event2020 AES International Conference on Audio for Virtual and Augmented Reality, AVAR 2020 - Virtual, Online
Duration: 17 Aug 202019 Aug 2020

Conference

Conference2020 AES International Conference on Audio for Virtual and Augmented Reality, AVAR 2020
CityVirtual, Online
Period17/08/2019/08/20

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