Computerization of a Vehicle Pass-By Noise Measurement Facility

A computerized data acquisition system for exterior vehicle noise testing was developed to provide the sophisticated data analysis techniques and test site efficiency required to meet current and future regulations. The computer generates accurate, dependable data in a final test report at the conclusion of each test minimizing data reduction and turnaround time. Computer control of test sequences eliminates manual operations and provides efficient use of site time. The inclusion of on line Fourier Analysis Techniques provides additional noise source identification capabilities.