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Article Dans Une Revue Journal of the Acoustical Society of America Année : 2017

Application of acoustic imaging techniques on snowmobile pass-by noise

Résumé

Snowmobile 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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hal-01478222 , version 1 (28-02-2017)

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Thomas Padois, Alain Berry. Application of acoustic imaging techniques on snowmobile pass-by noise. Journal of the Acoustical Society of America, 2017, 141, pp.EL134. ⟨10.1121/1.4976138⟩. ⟨hal-01478222⟩
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