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

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.

14 pages, 9 figures, 5 tables

Cited by in corpus (6)

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• Multi-Source DOA Estimation through Pattern Recognition of the Modal Coherence of a Reverberant Soundfield
• Analytical model for the relation between signal bandwidth and spatial resolution in Steered-Response Power Phase Transform (SRP-PHAT) maps
• Scalable-Complexity Steered Response Power Mapping based on Low-Rank and Sparse Interpolation
• CNN-based Robust Sound Source Localization with SRP-PHAT for the Extreme Edge
• Low-Complexity Steered Response Power Mapping based on Nyquist-Shannon Sampling