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Environmental Influence on the Acoustic Performance of OEM Automotive Loudspeakers
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Abstract
Automotive audio systems and loudspeakers are typically designed, evaluated, and optimized, for best acoustical performance under indoor laboratory testing conditions. Review of the current loudspeaker engineering test standards, including those published by the car manufacturers, confirms this.
Environmental testing is limited primarily to accelerated life tests which are subjective in analysis and often destructive. Although there are some post environmental test requirements for irreversible changes to acoustical performance, there are no requirements on how much the acoustical performance of loudspeakers may change while exposed to either high humidity or non - temperate temperature conditions.
The effect of humidity and water on the acoustical performance of today's “waterproof” automotive loudspeakers is shown to be potentially audible. Recommendations are made for designing more environmentally robust automotive loudspeakers.
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Citation
Phillips, A., "Environmental Influence on the Acoustic Performance of OEM Automotive Loudspeakers," SAE Technical Paper 890116, 1989, https://doi.org/10.4271/890116.Also In
References
- Electronic Industries Association 2001 Eye St., N.W., Washington, D.C. “Acceptance Testing of Dynamic Loudspeakers” April 1980
- Audio Engineering Society 60 East 42nd St, New York “AES Recommended Practice Specification of Loudspeaker Components Used in Professional Audio and Sound Reinforcement” 1984
- American National Standards Institute, Inc. 1430 Broadway, New York N.Y. ANSI Standard S4.26-1984, adopted the AES 2-1984 above 1984
- Bureau Central de la Commission Electrotechnique Internationale, 1, rue de Varembé Genéva Switzerland first 1972
- Japanese Standards Association Akasaka 4, Minato-ku, Tokyo, Japan Japanese Industrial Standard JIS C 5531-1978 “Testing Methods for Cone Type Loudspeakers” 1978 1984
- Deutsche Elektronische Kommission (DKE), Burggrafenstrasse 4-10, 1000 Berlin 30, DIM 45 573 “Loudspeakers; measuring conditions and methods for type tests, free field conditions” 1980 “Loudspeakers; procedure for checking the power handling capacity by means of an accelerated life test” 1969
- Ford Motor Company Dearborn, Michigan ES-E57F-19A068-AA Rev C2 “Engineering Specification for radio speakers and enclosure assemblies” 1987
- Chrysler Motors Corp. Detroit, Michigan PF-8386 Change B “Performance Standard for loudspeakers” 1988
- Delco Electronics, Kokomo, Indiana, C-10686 Rev C “Engineering Component Specification for speaker performance requirements” 1981
- Box G. Hunter W. Hunter J. S. “Statistics for Experimenters: An Introduction to Design, Data Analysis, and Model Building” John Wiley and Sons, Inc. 1978
- Juran J.M. “Quality Control Handbook” Third McGraw Hill 1974
- Juran J.M. Gryna F.M. Jr., “Quality Planning and Analysis: From Product Development through Use” Second McGraw Hill 1980
- Ishikawa Kaoru Dr. “Guide to Quality Control” Third Asian Productivity Organization 1982