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Multiple source localisation in the spherical harmonic domain

Multiple source localisation in the spherical harmonic domain
Multiple source localisation in the spherical harmonic domain

Spherical arrays facilitate processing and analysis of sound fields with the potential for high resolution in three dimensions in the spherical harmonic domain. Using the captured sound field, robust source localisation systems are required for speech acquisition, speaker tracking and environment mapping. Source localisation becomes a challenging problem in reverberant environments and under noisy conditions, leading to potentially poor performance in cocktail party scenarios. This paper evaluates the performance of a low-complexity localisation approach using spherical harmonics in reverberant environments for multiple speakers. Eigen-beams are used to estimate pseudo-intensity vectors pointing in the direction of sound intensity. This paper proposes a clustering approach in which the intensity vectors of active sound sources and strong reflections are extracted, yielding an estimate of the source direction in azimuth and inclination as an approach to source localisation.

clustering, multiple speaker lo-calisation, pseudo-intensity vectors, reverberation, Spherical harmonics
258-262
Institute of Electrical and Electronics Engineers Inc.
Evers, Christine
93090c84-e984-4cc3-9363-fbf3f3639c4b
Moore, Alastair H.
58d011fd-6a02-449a-9b77-651e8c86166e
Naylor, Patrick A.
13079486-664a-414c-a1a2-01a30bf0997b
Evers, Christine
93090c84-e984-4cc3-9363-fbf3f3639c4b
Moore, Alastair H.
58d011fd-6a02-449a-9b77-651e8c86166e
Naylor, Patrick A.
13079486-664a-414c-a1a2-01a30bf0997b

Evers, Christine, Moore, Alastair H. and Naylor, Patrick A. (2014) Multiple source localisation in the spherical harmonic domain. In 2014 14th International Workshop on Acoustic Signal Enhancement, IWAENC 2014. Institute of Electrical and Electronics Engineers Inc. pp. 258-262 . (doi:10.1109/IWAENC.2014.6954298).

Record type: Conference or Workshop Item (Paper)

Abstract

Spherical arrays facilitate processing and analysis of sound fields with the potential for high resolution in three dimensions in the spherical harmonic domain. Using the captured sound field, robust source localisation systems are required for speech acquisition, speaker tracking and environment mapping. Source localisation becomes a challenging problem in reverberant environments and under noisy conditions, leading to potentially poor performance in cocktail party scenarios. This paper evaluates the performance of a low-complexity localisation approach using spherical harmonics in reverberant environments for multiple speakers. Eigen-beams are used to estimate pseudo-intensity vectors pointing in the direction of sound intensity. This paper proposes a clustering approach in which the intensity vectors of active sound sources and strong reflections are extracted, yielding an estimate of the source direction in azimuth and inclination as an approach to source localisation.

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More information

Published date: 11 November 2014
Venue - Dates: 2014 14th International Workshop on Acoustic Signal Enhancement, IWAENC 2014, , Juan-les-Pins, France, 2014-09-07 - 2014-09-10
Keywords: clustering, multiple speaker lo-calisation, pseudo-intensity vectors, reverberation, Spherical harmonics

Identifiers

Local EPrints ID: 445943
URI: http://eprints.soton.ac.uk/id/eprint/445943
PURE UUID: a2ae36c1-e8aa-4842-84a1-4d835bae158b
ORCID for Christine Evers: ORCID iD orcid.org/0000-0003-0757-5504

Catalogue record

Date deposited: 14 Jan 2021 19:16
Last modified: 18 Feb 2021 17:41

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Contributors

Author: Christine Evers ORCID iD
Author: Alastair H. Moore
Author: Patrick A. Naylor

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