NOISE REDUCTION BY BARRIERS ON GROUND WITH FINITE IMPEDANCE

In recent years the very considerable influence of the ground plane on acoustic propagation in proximity to it has been evaluated quantitatively for cases where no varrier is present. This paper is an attempt to add realism to the prediction of barrier performance by introducing the new understanding of propagation near the ground plane into the calculation of barrier attenuation. A calculation method suitale for machine computation is described, together with outdoor measurements to test its validity, and predictions for a typical highway barrier to demonstrate the relevance.

• Supplemental Notes:
  • Proceedings of the International Conference Noise Control Engineering, Noise Control for the 80's, Inter-Noise 80, Vol. 2, Miami, Florida, December 8-10, 1980.
• Corporate Authors:

  Noise Control Foundation

  P.O. Box 1758
  Poughkeepsie, NY  United States  12603
• Authors:
  • Piercy, J E
  • Isei, T
• Conference:
  • Proceedings of the International Conference Noise Control Engineering, Noise Control for the 80's, Inter-Noise 80, Vol. 2, Miami, Florida, December 8-10, 1980.
• Publication Date: 1980

Media Info

• Pagination: p. 579-584

Subject/Index Terms

• TRT Terms: Electrical impedance; Forecasting; Mechanical impedance; Reduction (Chemistry); Sound level; Traffic noise
• Uncontrolled Terms: Ground
• Old TRIS Terms: Propagation; Reduction
• Subject Areas: Design; Environment; Highways; Planning and Forecasting; I21: Planning of Transport Infrastructure;

Filing Info

• Accession Number: 00348291
• Record Type: Publication
• Source Agency: Engineering Index
• Files: TRIS
• Created Date: Mar 30 1982 12:00AM