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Automotive Testing Requirements in the Design of a Reverberation Chamber
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English
Abstract
The purpose of this paper is to identify various concerns that need to be evaluated prior to the design and construction of a reverberation chamber, such that the chamber can be used for various automotive related acoustical measurements. Some of the concerns involve issues such as room shape and size, the degree of sound and vibration isolation required, the use of conventional building materials versus traditional massive construction, construction cost, and the performance requirements for the test noise generation system. Various uses of a reverberation chamber include random incidence sound absorption measurements, small sample sound transmission loss measurements, vehicle insertion loss tests, dash panel, door, and other “buck” evaluation tests, and sound power level measurements of small automotive components and devices. These uses have differing and in some cases conflicting requirements that compete in the selection of room design parameters. The paper discusses these issues including the requirements for sound level generation in the chamber for proper measurements. The paper also provides case studies on the use of reverberation chambers for automotive applications.
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Citation
Kolano, R., Beggs, W., and Saha, P., "Automotive Testing Requirements in the Design of a Reverberation Chamber," SAE Technical Paper 931290, 1993, https://doi.org/10.4271/931290.Also In
References
- American Society for Testing and Materials (ASTM) Designation E90 Standard Test Method for Measurement of Airborne Sound Transmission Loss of Building Partitions
- ASTM Designation C423 Standard Test Method for Sound Absorption and Sound Absorption Coefficients by the Reverberation Room Method
- van Nieuwland J. M. Weber C. Eigenmodes in Nonrectangular Reverberation Rooms Noise Control Engineering Journal 13 3 November-December 1979 112 121
- Dämmig P Model Investigation into Sound Fields in Reverberation Rooms Acoustica 75 1991 105 120
- American National Standard Institute (ANSI) Designation S1.31 Precision Methods for the Determination of Sound Power Levels of Broad-band Noise Sources in Reverberation Rooms