The Influence of Test Site on Exterior Vehicle Noise Measurements

A series of tests were conducted to establish the correlation among various sites for vehicle exterior noise measurements. The purpose of this paper is to present the results and the method developed to achieve the correlation in terms of the following: (1) Ford and site equipment differences, (2) driver differences, and (3) differences between site physical qualities. This paper also discusses the results of the analysis performed to determine the overall test repeatability for all sites, the test repeatability for each site and the repeatability of test equipment at various test sites.