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The Geometry of Sound-Source Localization using Non-Coplanar microphone Arrays

Xavier Alameda-Pineda 1 Radu Horaud 1 Bernard Mourrain 2 
1 PERCEPTION - Interpretation and Modelling of Images and Videos
Inria Grenoble - Rhône-Alpes, LJK - Laboratoire Jean Kuntzmann, Grenoble INP - Institut polytechnique de Grenoble - Grenoble Institute of Technology
2 GALAAD - Geometry, algebra, algorithms
CRISAM - Inria Sophia Antipolis - Méditerranée , UNS - Université Nice Sophia Antipolis (1965 - 2019), CNRS - Centre National de la Recherche Scientifique : UMR6621
Abstract : This paper addresses the task of sound-source localization from time delay estimates using arbitrarily shaped non-coplanar microphone arrays. We fully exploit the direct path propagation model and our contribution is threefold: we provide a necessary and sufficient condition for a set of time delays to correspond to a sound source position, a proof of the uniqueness of this position, and a localization mapping to retrieve it. The time delay estimation task is casted into a non-linear multivariate optimization problem constrained by necessary and sufficient conditions on time delays. Two global optimization techniques to estimate time delays and localize the sound source are investigated. We report an extensive set of experiments and comparisons with state-of-the-art methods on simulated and real data in the presence of noise and reverberations.
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Submitted on : Monday, July 29, 2013 - 2:22:24 PM
Last modification on : Friday, August 5, 2022 - 3:50:50 AM
Long-term archiving on: : Wednesday, October 30, 2013 - 4:12:42 AM



Xavier Alameda-Pineda, Radu Horaud, Bernard Mourrain. The Geometry of Sound-Source Localization using Non-Coplanar microphone Arrays. WASPAA 2013 - IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, Oct 2013, New Paltz, United States. pp.1-4, ⟨10.1109/WASPAA.2013.6701896⟩. ⟨hal-00848876⟩



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