ATTENUATION OF SOUND AS A FUNCTION OF BARRIER ANGLE

Oblique wall noise barriers were investigated for angular dependence of attenuation. Experiments with a model at 5 kHz showed less than 1 dB difference from normal incidence to 45 degree incidence. Variations may approach 2 dB at angles near 70 degrees from normal incidence. Thus, the obliquencess of the wall may be neglected for most practical problems.

• Record URL:
  http://www.wsdot.wa.gov/research/reports/fullreports/024.2.pdf
• 
• Supplemental Notes:
  • This report was sponsored by the Washington State Highway Commission.
• Corporate Authors:

  University of Washington, Seattle

  Applied Physics Laboratory, 1013 NE 40th Street
  Seattle, WA  United States  98105
• Publication Date: 1976-3

Media Info

• Features: Figures; References; Tables;
• Pagination: 20 p.

Subject/Index Terms

• TRT Terms: Acoustics; Mathematical models; Noise barriers; Noise control
• Uncontrolled Terms: Models
• Old TRIS Terms: Obliquity angle
• Subject Areas: Design; Highways;

Filing Info

• Accession Number: 00164942
• Record Type: Publication
• Source Agency: National Safety Council Safety Research Info Serv
• Report/Paper Numbers: WSHDRPR24.2
• Files: TRIS
• Created Date: Mar 7 1978 12:00AM