SPEED INFLUENCE ON TIRE/ROAD NOISE INSIDE A PASSENGER CAR

The paper contains detailed analysis of the speed influence on the level and frequency spectra of the tire/road noise inside a passenger car. A special experiment performed to estimate the influence is described and its results discussed. Different noise-speed characteristics were obtained for interior and exterior tire/road noise. As was expected, the sound levels of exterior noise are proportional to the logarithm of the speed. Tire/road noise inside a cabin of passenger car is not governed by the same rules. The speed influence on A-weighted sound pressure level is linear. The noise level increases on the average 1.2 dB(A) per 10 km/h. In the frequency domain speed-dependent and speed-independent tire/road noise generation mechanisms were observed and discussed in the paper. For the covering abstract see ITRD E107776.

Language

  • English

Media Info

  • Features: References;
  • Pagination: p. 1133-6

Subject/Index Terms

Filing Info

  • Accession Number: 00808128
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • ISBN: 2-9515619-1-1
  • Files: ITRD
  • Created Date: Apr 4 2001 12:00AM