Robust acoustic source localization based on modal beamforming and time–frequency processing using circular microphone arrays

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Title: Robust acoustic source localization based on modal beamforming and time–frequency processing using circular microphone arrays
Authors: Torres, Ana M. | Cobos, Máximo | Pueo, Basilio | López, José J.
Research Group/s: Comunicación y Públicos Específicos
Center, Department or Service: Universidad de Alicante. Departamento de Comunicación y Psicología Social
Keywords: Circular harmonics beamforming | Robust acoustic source | Time–frequency processing
Knowledge Area: Comunicación Audiovisual y Publicidad
Issue Date: Sep-2012
Publisher: Acoustical Society of America
Citation: Journal of the Acoustical Society of America. 2012, 132(3): 1511-1520. doi:10.1121/1.4740503
Abstract: Uniform circular array processing has been shown to be a very useful tool for broadband acoustic source localization over 360°. Specifically, beamforming methods based on circular harmonics have attracted a lot of research attention in the last several years, as modal array signal processing is a very active research topic. On the other hand, due to the sparsity properties of speech, source localization methods in the time–frequency (T–F) domain have also demonstrated their capability to locate several simultaneous sources with high accuracy. In this paper, a localization framework based on circular harmonics beamforming and T–F processing that provides accurate localization performance under very adverse acoustic conditions is presented. Modal processing and sparsity-based localization are jointly addressed to estimate the direction-of-arrival of multiple concurrent speech sources. Experiments in real and simulated environments with different microphone setups are discussed, showing the validity of the proposed approach and comparing its performance with other state-of-the-art methods.
Sponsor: The Spanish Ministry of Science and Innovation supported this work under Project No. TEC2009-14414-C03-01.
ISSN: 0001-4966 | 1520-8524 (Online)
DOI: 10.1121/1.4740503
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2012 Acoustical Society of America
Peer Review: si
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Appears in Collections:INV - COMPUBES - Artículos de Revistas

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