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.
Noise Testing of Vehicles—Acoustic Propagation Phenomena
Sae Technical Papers
1980 Automotive Engineering Congress and Exposition ; 1980
1980-02-01
Conference paper
English
Turbulence , Acoustics , Noise
Noise Testing of Vehicles - Acoustic Propagation Phenomena
Automotive engineering | 1980
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