ACOUSTIC SCATTERING BY DOUBLE THIN HIGHWAY NOISE BARRIERS ---INTERNOISE 84. INTERNATIONAL COOPERATION FOR NOISE CONTROL. PROCEEDINGS 1984 INTERNATIONAL CONFERENCE ON NOISE CONTROL ENGINEERING, HONOLULU, HAWAII, 3-5 DECEMBER 1984, VOLUMES 1 AND 2.

A theoretical modelling approach to analysing acoustic diffraction by double, thin parallel highway barriers separated by some distance is described. It involves the method of images and uses both the t-matrix method and the finite element eigenfunction method (feem). Details of calculated results and indications of results from tests using 1:5 scale models are given. The measured excess attenuation (ea) appears to agree well with those predicted although there are indications that there is need for improvement of the feem scheme for sound receivers in close proximity to the barrier. For the covering abstract of the conference see IRRD 816933.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0931784107
• Corporate Authors:

  NOISE CONTROL FOUNDATION

  PO BOX 3469, ARLINGTON BRANCH
  Poughkeepsie,   United States 
• Authors:
  • Varadan, V K
  • Varadan, V V
  • Hayek, S I
• Publication Date: 1984

Language

• English

Media Info

• Pagination: p. 363-8
• Serial:
  • Publication of: Noise Control Foundation
  • Publisher: Noise Control Foundation
  • ISSN: 0736-2935

Subject/Index Terms

• TRT Terms: Conferences; Damping (Physics); Design; Evaluation and assessment; Finite element method; Mathematical models; Noise barriers; Scale models; Sound; Structural models
• Uncontrolled Terms: Decreases
• Subject Areas: Bridges and other structures; Design; Highways;

Filing Info

• Accession Number: 00483350
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• ISBN: 0-931784-10-7
• Files: ITRD, TRIS
• Created Date: May 31 1989 12:00AM