SUBWAY TUNNEL ACOUSTICS - INFLUENCE OF SOUND ABSORPTION TREATMENT OF TUNNEL WALLS

One way of decreasing the noise level in subway systems is to treat the subway tunnel walls with sound absorption material. This has been done in some sections of the Washington Metropolitan Area Transportation System. The treatment has consisted of Pyrok spray-on on the lower parts of the walls. Totally the treatment covers approximately 20% of the circumference. To study the benefit of the treatment tests have been performed with a cannon as a sound source. The time history of cannon shots at different distances from the source has been evaluated.

• Supplemental Notes:
  • Presented at the 1976 International Conference on Noise Control Engineering, Washington, D.C., 5-7 April 1976.
• Corporate Authors:

  Institute of Noise Control Engineering

  Iowa State University, 210 Marston Hall
  Ames, IA  United States  50011-2153
• Authors:
  • KIHLMAN, T
  • Wilson, G P
• Conference:
  • Presented at the 1976 International Conference on Noise Control Engineering, Washington, D.C., 5-7 April 1976.
• Publication Date: 1976

Media Info

• Features: Figures; References;
• Pagination: p. 229-232

Subject/Index Terms

• TRT Terms: Noise; Noise barriers; Noise control; Subways
• Identifier Terms: Washington Metropolitan Area Transit Authority
• Uncontrolled Terms: Subway noise
• Old TRIS Terms: Noise attenuation; Nose suspended
• Subject Areas: Environment; Public Transportation; Railroads;

Filing Info

• Accession Number: 00152442
• Record Type: Publication
• Source Agency: Institute of Noise Control Engineering
• Report/Paper Numbers: Proceeding
• Files: TRIS
• Created Date: May 11 1981 12:00AM