Binaural direction-of-arrival estimation in reverberant environments using the direct-path dominance test

Hanan Beit-On, Boaz Rafaely

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

2 Scopus citations

Abstract

Speaker localization in reverberant environments is currently an important challenge in audio signal processing, and several methods have recently been proposed to address it. One such family of methods is based on the direct-path dominance (DPD) test that was developed specifically for spherical arrays and recently extended to arbitrary arrays. In this paper, an extension of the DPD test for a binaural array is examined. This extension uses a focusing technique to remove the frequency dependence of the steering matrix within frequency bands. This facilitates frequency smoothing, which is necessary for decorrelating coherent reflections. Unlike other focusing approaches, the proposed focusing approach does not rely on the initial estimation of source directions, facilitating its application in reverberant environments. However, in the binaural case, there is no guarantee of focusing performance. This paper presents an analysis of this focusing process for the binaural case and shows that good focusing performance can be obtained in the binaural case. A simulation study examines the effect of the focusing and smoothing and demonstrates the proposed method's capabilities in overcoming adverse reverberation conditions.

Original languageEnglish
Title of host publicationProceedings of the 23rd International Congress on Acoustics
Subtitle of host publicationIntegrating 4th EAA Euroregio 2019
EditorsMartin Ochmann, Vorlander Michael, Janina Fels
PublisherInternational Commission for Acoustics (ICA)
Pages3305-3312
Number of pages8
ISBN (Electronic)9783939296157
DOIs
StatePublished - 1 Jan 2019
Event23rd International Congress on Acoustics: Integrating 4th EAA Euroregio, ICA 2019 - Aachen, Germany
Duration: 9 Sep 201923 Sep 2019

Publication series

NameProceedings of the International Congress on Acoustics
Volume2019-September
ISSN (Print)2226-7808
ISSN (Electronic)2415-1599

Conference

Conference23rd International Congress on Acoustics: Integrating 4th EAA Euroregio, ICA 2019
Country/TerritoryGermany
CityAachen
Period9/09/1923/09/19

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