Application of acoustic imaging techniques on snowmobile pass-by noise | Zendy

Thomas Padois | Zendy; Alain Berry | Zendy

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Application of acoustic imaging techniques on snowmobile pass-by noise

Author(s) -

Thomas Padois,

Alain Berry

Publication year - 2017

Publication title -

the journal of the acoustical society of america

Language(s) - English

Resource type - Journals

eISSN - 1520-8524

pISSN - 0001-4966

DOI - 10.1121/1.4976138

Subject(s) - noise (video) , deconvolution , acoustics , beamforming , microphone array , computer science , microphone , acoustic emission , synchronization (alternating current) , physics , computer vision , telecommunications , algorithm , sound pressure , image (mathematics) , channel (broadcasting)

International audienceSnowmobile manufacturers invest important efforts to reduce the noise emission of their products. The noise sources of snow-mobiles are multiple and closely spaced, leading to difficult source separation in practice. In this study, source imaging results for snowmobile pass-by noise are discussed. The experiments involve a 193-microphone Underbrink array, with synchronization of acoustic with video data provided by a high-speed camera. Both conventional beamforming and Clean-SC deconvolution are implemented to provide noise source maps of the snowmobile. The results clearly reveal noise emission from the engine, exhaust, and track depending on the frequency range considered

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