Papers › SMP-PHAT: Lightweight DoA Estimation by Merging Microphone Pairs

SMP-PHAT: Lightweight DoA Estimation by Merging Microphone Pairs

27 Mar 2022arXiv:2203.14409links table onlyarchive 2025-07-28

François Grondin, Marc-Antoine Maheux, Jean-Samuel Lauzon, Jonathan Vincent, François Michaud

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This paper introduces SMP-PHAT, which performs direction of arrival (DoA) of sound estimation with a microphone array by merging pairs of microphones that are parallel in space. This approach reduces the number of pairwise cross-correlation computations, and brings down the number of flops and memory lookups when searching for DoA. Experiments on low-cost hardware with commonly used microphone arrays show that the proposed method provides the same accuracy as the former SRP-PHAT approach, while reducing the computational load by 39% in some cases.

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