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Measurement of Automotive Passby Noise
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English
Abstract
Procedures for measurement of noise emitted by various automotive vehicles have been developed and refined by various technical committees of the SAE. These procedures are used for evaluation of vehicles during development and also as the basis for noise regulations. Recent work on the parameters of these procedures indicates that the site used, the vehicle operator, and the ambient weather conditions are all significant factors in the accuracy of test results. Variation between samples of like vehicles also is a significant factor in the attempt to determine noise level characteristics of a given model. Revision of these procedures to minimize the variation in results attributable to variation in test parameters, and to become more representative of typical operating modes of the vehicle, is essential.
Authors
Citation
Hillquist, R. and Bettis, R., "Measurement of Automotive Passby Noise," SAE Technical Paper 720275, 1972, https://doi.org/10.4271/720275.Also In
References
- Apps D. C. “The AMA 125-Sone New-Vehicle Noise Specification.” Noise Control May 1956
- Bettis R. A. “Automobile Passby Noise Variability.” Report 4587, General Motors Proving Ground Milford, Mich.
- LaBreche R. M. “Variation in Measured Automobile Passby Noise Due to Operator and Environmental Factors.” Report 4587, General Motors Proving Ground Milford, Mich.
- SAE Recommended Practice, Exterior Sound Level for Heavy Trucks and Buses-SAE J366a; SAE Standard, Exterior Loudness Evaluation of Heavy Trucks and Buses- SAE J672a; SAE Standard, Sound Level for Passenger Cars and Light Trucks-SAE J986a SAE Handbook