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

Xavier Alameda-Pineda (1) , Radu Horaud (1)

1 PERCEPTION - Interpretation and Modelling of Images and Videos

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.

Domaines: Traitement du signal et de l'image [eess.SP]; Traitement du signal et de l'image [eess.SP]

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⟩