Quantifying how the environment effects SAE-J192 pass-by noise testing of snowmobiles

Document Type

Conference Proceeding

Publication Date

5-16-2005

Department

Department of Mechanical Engineering-Engineering Mechanics

Abstract

A study was performed to understand how the environment affects the results of J-192 pass-by noise testing of snowmobiles. This study involved measuring the sound pressure at 7 different microphone positions due to both speaker excitation and various snowmobiles passing through the microphone array. Simultaneous to the sound measurements, weather conditions were recorded including wind speed and direction, temperature, humidity, snow depth, and in some cases ground hardness. All measured data was then used to determine which environmental factors influenced the measured sound pressures the most. Finally, a sound power approach was also used to measure the snowmobile pass-by noise to determine whether this method was more repeatable than the single microphone approach which showed variations of over 7 dBA over the course of testing.

Publisher's Statement

Copyright © 2005 SAE International. Publisher’s version of record: https://doi.org/10.4271/2005-01-2414

Publication Title

SAE Technical Papers

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