DEPENDENCE ON AUTOMOTIVE SOUND LEVELS ON VEHICLE-TO-MICROPHONE DISTANCE

Several independent studies of sound level variation with nominal microphone distance are reported for a variety of equipment types tested in accordance with SAE sound test procedures. Good correlation between levels and distance is shown, although dependent on equipment type and mode of operation. It is concluded that predictions of sound levels at distances closer to the source than the normally-specified microphone distance can be made with reasonable accuracy.

• Supplemental Notes:
  • This is a coference report from the SAE International Automobile Tire Conference, 22-24 October. 1974, Toronto, Canada.
• Corporate Authors:

  Society of Automotive Engineers

  485 Lexington Avenue
  New York, NY  United States  10017
• Authors:
  • Hillquist, R K
• Publication Date: 1974

Media Info

• Features: References; Tables;
• Pagination: 6 p.

Subject/Index Terms

• TRT Terms: Acoustic equipment; Acoustic measuring instruments; Acoustics; Distance; Engines; Forecasting; Microphones; Noise; Sound
• Old TRIS Terms: Acoustic measurement; Engine noise
• Subject Areas: Economics; Environment; Highways; Safety and Human Factors; Society; Vehicles and Equipment;

Filing Info

• Accession Number: 00080404
• Record Type: Publication
• Source Agency: Highway Safety Research Institute
• Report/Paper Numbers: SAE 740966
• Files: TRIS
• Created Date: Feb 27 1975 12:00AM