REVERBERATION IN A CITY STREET

SCATTERING FROM THE EDGES OF WALLS AND ROOFS OF BUILDINGS IS ALWAYS IMPORTANT IN DETERMINING THE DECAY OF SOUND IN A STREET. IF THE WALLS OF THE BUILDINGS ARE COVERED WITH FOLIAGE, SCATTERING BY THE LEAVES INCREASES THE DECAY OF THE WAVELENGTHS COMPARABLE TO THE DIMENSIONS OF THE LEAVES. THE DECAY OF ONE-THIRD-OCTAVE PINK NOISE IN A STREET WAS COMPARED BEFORE AND AFTER THE IVY ON ONE BUILDING LEAFED OUT IN THE SPRING. THE EFFECT OF THE IVY ON REVERBERATION IN THE STREET WAS NEGLIGIBLE EXCEPT AROUND 4000 HZ, WHERE THE DECAY OF SOUND WAS INCREASED BY ABOUT 30 DB/SEC. SINCE ABSORPTION OF SOUND BY THE IVY IS SLIGHT, THE REDUCTION OF REVERBERATION MUST BE MAINLY BY SCATTERING OF SOUND BY THE FOLIAGE.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00014966
• Authors:
  • Aylor, J
  • Parlange, J
  • Chapman, Cheryl E
• Publication Date: 0

Media Info

• Pagination: p. 1754-7
• Serial:
  • Journal of the Acoustical Society of America
  • Volume: 54
  • Issue Number: 6
  • Publisher: Acoustical Society of America
  • ISSN: 0001-4966
  • Serial URL: http://asadl.org/jasa/

Subject/Index Terms

• TRT Terms: Biodeterioration; Noise; Noise control; Reverberation; Sound absorption; Streets; Urban areas; Vegetation
• Old TRIS Terms: Runaway vehicles
• Subject Areas: Economics; Environment; Highways; Safety and Human Factors; Society;

Filing Info

• Accession Number: 00224604
• Record Type: Publication
• Files: TRIS
• Created Date: Jun 11 1974 12:00AM