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

摘要

This paper proposes an efficient method based on the steered-response power(SRP) technique for sound source localization using microphone arrays: thevolumetric SRP (V-SRP). As compared to the SRP, by deploying a sparservolumetric grid, the V-SRP achieves a significant reduction of thecomputational complexity without sacrificing the accuracy of the locationestimates. 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 demonstratethe benefits of the proposed approaches. Specifically, the RV-SRP is shown tooutperform the SRP in accuracy at a computational cost of about ten timeslower.