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Noise Testing of Vehicles—Acoustic Propagation Phenomena
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English
Abstract
A number of propagation phenomena which cause variability in the noise testing of vehicles using standard procedures have been isolated and studied. Included are the effects of interference produced by reflection from various ground surfaces, the effects of refraction caused by wind and temperature gradients in the atmosphere, changes in sound level due to the wake of the vehicle, and the effects of normal atmospheric turbulence.
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Piercy, J. and Embleton, T., "Noise Testing of Vehicles—Acoustic Propagation Phenomena," SAE Technical Paper 800276, 1980, https://doi.org/10.4271/800276.Also In
References
- Piercy J.E. Embleton T.F.W. “Effect of Ground on Near-Horizontal Sound Propagation” SAE Transactions 83 1974 928 936
- Piercy J.E. Embleton T.F.W. Sutherland L.C. “Review of Noise Propagation in the Atmosphere” Jrl. Acoust. Soc. Amer. 61 1977 1403 1418
- Embleton T.F.W. Piercy J.E. Olson N. “Outdoor Sound Propagation over Ground of Finite Impedance” Jrl. Acoust. Soc. Amer. 59 1976 267 277
- Chessell C.I. “Propagation of Noise along a Finite Impedance Boundary” Jrl. Acoust. Soc. Amer. 62 1977 825 834
- Chernov L.A. “Wave Propagation in a Random Medium” New York McGraw-Hill 1960
- Piercy J.E. Embleton T.F.W. Olson N. “Mechanisms Causing Variability in the Noise Testing of Light Motor Vehicles” 1976