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Acoustic source localization using a polyhedral microphone array and an improved generalized cross-correlation technique

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Padois, Thomas et Sgard, Franck et Doutres, Olivier et Berry, Alain. 2017. « Acoustic source localization using a polyhedral microphone array and an improved generalized cross-correlation technique ». Journal of Sound and Vibration, vol. 386. p. 82-99.
Compte des citations dans Scopus : 4.

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Résumé

Millions of workers are exposed to excessive noise levels each day. Acoustic solutions have to be developed to protect workers from hearing loss. The first step of an acoustic diagnosis is the source localization which can be performed with a microphone array. Spherical microphone arrays can be used to detect the acoustic source positions in a workplace. In this study, a spherical microphone array, with polyhedral discretization, is proposed and compared with a spherical array with a slightly different geometry. The generalized cross-correlation technique is used to detect the source positions. Moreover, two criteria are introduced to improve the noise source map. The first is based on the geometric properties of the microphone array and the scan zone whereas the second is based on the energy of the spatial likelihood function. Numerical data are used to provide a systematic comparison of both geometries and criteria. Finally, experiments in a reverberant room reveal that the polyhedral microphone array associated with both criteria provides the best noise source map.

Type de document: Article publié dans une revue, révisé par les pairs
Professeur:
Professeur
Doutres, Olivier
Affiliation: Génie mécanique
Date de dépôt: 16 nov. 2016 19:43
Dernière modification: 22 nov. 2017 21:32
URI: http://espace2.etsmtl.ca/id/eprint/13931

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