Geometrically-constrained Robust Time Delay Estimation Using Non-coplanar Microphone Arrays

Xavier Alameda-Pineda 1, * Radu Horaud 1, *
* Corresponding author
1 PERCEPTION - Interpretation and Modelling of Images and Videos
Inria Grenoble - Rhône-Alpes, LJK - Laboratoire Jean Kuntzmann, INPG - Institut National Polytechnique de Grenoble
Abstract : In this paper we present a geometrically-constrained time delay estimation method for sound source localization (gTDE). An algebraic analysis reveals that the method can deal with an arbitrary number of non-coplanar microphones. We derive a constrained non-linear optimization problem that can be solved using local convex programming. Unlike existing techniques, which consider pairwise TDE's, the proposed method optimally estimates a set of time delays that are consistent with the source's location. Extensive simulated experiments validate the method in the presence of noise and of reverberations.
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Xavier Alameda-Pineda, Radu Horaud. Geometrically-constrained Robust Time Delay Estimation Using Non-coplanar Microphone Arrays. EUSIPCO 2012 - 20th European Signal Processing Conference, Aug 2012, Bucharest, Romania. pp.1309-1313. ⟨hal-00768763⟩

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