OBJECTIVE METHOD OF EVALUATING ASPIRATION WIND NOISE

Cars at high speeds are subjected to differentials in pressure between the car interior and the car exterior. The pressure differentials are sufficient to cause body seals in certain locations to permit air to pass by the seal, resulting in a noise defined as aspiration wind noise. An objective method of measuring aspiration wind noise at the leak source is introduced for cars at 70 mph and for static cars pressurized to simulate 70 mph. This method, using a meter, replaces the previously used method of subjective evaluation of the loudness of wind noise. An advantage of the new method is that it disregards the car exterior air turbulence noise component, which is a function of car styling and aerodynamics.

  • Supplemental Notes:
    • Presented at SAE Meeting May 22-26, 1972.
  • Corporate Authors:

    Society of Automotive Engineers

    485 Lexington Avenue
    New York, NY  United States  10017
  • Authors:
    • Jagtiani, H
  • Publication Date: 1972-5

Media Info

  • Pagination: 10 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00261270
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Report/Paper Numbers: SAE Pap 720506
  • Files: TRIS
  • Created Date: Oct 22 1974 12:00AM