A STUDY TO DEFINE PHYSICAL AND ACOUSTICAL PARAMETERS OF EXTERIOR TRUCK NOISE TEST MEASUREMENT SITES

Truck exterior noise test sites are presently prescribed as being level and free from powdery snow, long grass, loose soil and ashes. These general terms are used to describe the requirements of a noise test site with regard to the surface flatness and the amount of absorptive materials permitted. The purpose of this study was to better define the parameters that describe the physical and acoustical properties of a test site. The physical properties that were studied were the microphone height and the test site surface flatness. The acoustical property that was studied was the absorption coefficient of the test site surface. By specifying allowable limits on these parameters, a noise test site may be checked to see if it is acceptable as a "standard" site.

• Corporate Authors:

  International Harvester Company

  Truck Engineering Center
  Fort Wayne, Indiana,   United States  46801
• Authors:
  • Henry, T J
  • Schreiber, J K
• Publication Date: 1975

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: 187 p.

Subject/Index Terms

• TRT Terms: Absorbents; Acoustic properties; Physical properties; Test facilities; Texture; Traffic noise; Trucks
• Old TRIS Terms: Absorbers /materials/; Flatness; Truck noise
• Subject Areas: Highways; Motor Carriers; Safety and Human Factors;

Filing Info

• Accession Number: 00144426
• Record Type: Publication
• Source Agency: Highway Safety Research Institute
• Report/Paper Numbers: Final Rpt.
• Contract Numbers: IH 7509-C2.2
• Files: TRIS
• Created Date: May 31 1977 12:00AM