Revised expression of vehicle noise propagation over ground

• Yamamoto,Kohei

  Kobayasi Institute of Physical Research

• Yamashita,Mitsuyasu

  Kobayashi Institute of Physical Research

• Mukai,Tadashi

  Nihon Doro Kodan,Osaka Construction Bureau

Bibliographic Information

Other Title

• 自動車騒音の地表面上伝搬に関する実用式

Abstract

The authors proposed a propagation model for ground effect of vehicle noise. Since it was given by a simple formula and related charts, rough estimation of vehicle noise level at a road side could be made without any precise computation. In this paper, the model is revised for wide application to a prediction procedure of road traffic noise. Numerical expressions are given to the model by introducing a new additional parameter. The parameter, which is simply determined from the heights of a source and a receiver, is found to play an important role in the propagation model to determine the property of vehicle noise over absorptive ground. The revised expressions are applied to outdoor sound propagation on lawn field for A weighted vehicle noise. Good agreements are obtained between calculated and experimental results. Calculation rules are empirically specified to apply our model to a prediction procedure of road traffic noise. The validity of the procedure is checked by the results of scale model experiments for typical road structures

Journal

• Journal of the Acoustical Society of Japan ?

  Journal of the Acoustical Society of Japan ? 15 (4), 233-241,

  Japan Acoustical Society of Japan

Keywords

• Road traffic noise
• Propagation
• Ground effect

Details

• CRID: 1541698620227119104
• NII Article ID: 110003106109
• NII Book ID: AA00256597
• Web Site: http://dl.ndl.go.jp/info:ndljp/pid/10571572
• Text Lang: en
• Data Source:
  • NDL-Digital
  • CiNii Articles