Paper ID: 2203.14409

SMP-PHAT: Lightweight DoA Estimation by Merging Microphone Pairs

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

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.

Submitted: Mar 27, 2022