title: Application of acoustic imaging techniques on snowmobile pass-by noise.
abstract: Snowmobile manufacturers invest important efforts to reduce the noise emission of their products. The noise sources of snowmobiles 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.
authors.affiliation: Groupe d'Acoustique de l'Université de Sherbrooke (GAUS)-Department of Mechanical Engineering, Université de Sherbrooke, 2500 boulevard de l'université, Sherbrooke (Qc) J1K 2R1 Canada thomas.padois@usherbrooke.ca, alain.berry@usherbrooke.ca.
authors.forename: Thomas
authors.initials: T
authors.lastname: Padois
authors.affiliation: Groupe d'Acoustique de l'Université de Sherbrooke (GAUS)-Department of Mechanical Engineering, Université de Sherbrooke, 2500 boulevard de l'université, Sherbrooke (Qc) J1K 2R1 Canada thomas.padois@usherbrooke.ca, alain.berry@usherbrooke.ca.
authors.forename: Alain
authors.initials: A
authors.lastname: Berry