Efficient Steered-Response Power Methods for Sound Source Localization Using Microphone Arrays

Markus V. S. Lima; Wallace A. Martins; Leonardo O. Nunes; Luiz W. P. Biscainho; Tadeu N. Ferreira; Maurício V. M. Costa; Bowon Lee

doi:10.1109/lsp.2014.2385864

arXiv · 1407.2351

Efficient Steered-Response Power Methods for Sound Source Localization Using Microphone Arrays

Markus V. S. Lima·Wallace A. Martins·Leonardo O. Nunes·Luiz W. P. Biscainho·Tadeu N. Ferreira·Maurício V. M. Costa·Bowon Lee

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Abstract

This paper proposes an efficient method based on the steered-response power (SRP) technique for sound source localization using microphone arrays: the volumetric SRP (V-SRP). As compared to the SRP, by deploying a sparser volumetric grid, the V-SRP achieves a significant reduction of the computational complexity without sacrificing the accuracy of the location estimates. By appending a fine search step to the V-SRP, its refined version (RV-SRP) improves on the compromise between complexity and accuracy. Experiments conducted in both simulated- and real-data scenarios demonstrate the benefits of the proposed approaches. Specifically, the RV-SRP is shown to outperform the SRP in accuracy at a computational cost of about ten times lower.

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BibTeX RIS

Markus V. S. Lima, Wallace A. Martins, Leonardo O. Nunes, Luiz W. P. Biscainho, Tadeu N. Ferreira, Maurício V. M. Costa, Bowon Lee. 2015-02-16. Efficient Steered-Response Power Methods for Sound Source Localization Using Microphone Arrays. https://doi.org/10.1109/lsp.2014.2385864

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