Acoustic sources joint localization and characterization using compressed sensing

Abstract : In this work, a Compressed Sensing (CS) strategy is developed in order to jointly achieve two complementary tasks regarding sound sources: localization and identification. Here, the sources are assumed sparse in the spatial domain, and greedy techniques are used for their localization. The case of coherent sources located in a plane is studied both numerically and experimentally at different frequencies. Results show that, in this framework, CS source localization is reliable using a significantly smaller number of microphones than classical techniques (standard or high resolution beamforming techniques), while overcoming some of their pitfalls. We then use a similar technique for the identification of the source nature, i.e. its radiation pattern, and here the sparsity domain is extended to a basis of elementary radiating functions. We present simulation and experimental results using calibrated sources and measurements performed with a 3D array of 80 randomly distributed microphones. This study investigates the limitations of Compressed Sensing in terms of resolution and reliability of the identification, with respect to the number of sensors, the signal to noise ratio and the density of the reconstruction region.
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Article dans une revue
Journal of the Acoustical Society of America, Acoustical Society of America, 2012, 131 (4), pp.3257 - 3257. 〈10.1121/1.4708160〉
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https://hal.sorbonne-universite.fr/hal-01587121
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Soumis le : mercredi 13 septembre 2017 - 16:40:35
Dernière modification le : mercredi 21 mars 2018 - 18:58:10

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Francois Ollivier, Antoine Peillot, Gilles Chardon, Laurent Daudet. Acoustic sources joint localization and characterization using compressed sensing. Journal of the Acoustical Society of America, Acoustical Society of America, 2012, 131 (4), pp.3257 - 3257. 〈10.1121/1.4708160〉. 〈hal-01587121〉

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