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Dependence of Automotive Sound Levels on Vehicle-to-Microphone Distance
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English
Abstract
Several independent studies of sound level variation with nominal microphone distance are reported for a variety of equipment types tested in accordance with SAE exterior sound level test procedures. Good correlation between levels and distance is shown, although dependent on equipment type and mode of operation. It is concluded that predictions of sound levels at distances closer to the source than the normally-specified microphone distance can be made with reasonable accuracy.
Authors
Citation
Hillquist, R., "Dependence of Automotive Sound Levels on Vehicle-to-Microphone Distance," SAE Technical Paper 740966, 1974, https://doi.org/10.4271/740966.Also In
References
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- SAE Small Engine Powered Equipment Subcommittee 12 November 1971
- SAE Small Engine Powered Equipment Subcommittee 13 March 1973
- Mohr J. W. Outboard Marine Corporation 8 June 1971
- Lechtenberg L. J. Briggs & Stratton Corporation March 1972
- Hillquist R. K. Bettis R. A. “Measurement of Automotive Passby Noise.” SAE Paper No. 720275 January 1972
- Bettis R. A. Sexton M. Z. “The Effect of Test Site Topography in Vehicle Noise Measurement.” General Motors Proving Ground Engineering Publication No. 5270 April 1973