SINGLE-NUMBER RATINGS FOR OUTDOOR-INDOOR SOUND INSULATION
All of the single-number indices currently used to assess the sound insulation of walls use one-third octave band sound transmission loss data in the frequency range 125 to 4,000 Hz. Forty-two walls were measured over the range 50 to 5,000 Hz. None of the existing indices correlated well with the calculated 50- to 4,000-Hz loudness reduction using the International Organization for Standardization method. A new proposed rating, the outdoor-indoor transmission class (OITC), which is based on A-weighted sound reduction in the range 80 to 5,000 Hz, shows significant improvement over other methods. Typically, both the loudness reduction and OITC give lower numbers than sound transmission class for wall constructions.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/030905009X
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Supplemental Notes:
- This paper appears in Transportation Research Record No. 1255, Energy and Environment 1990: Transportation-Induced Noise and Air Pollution. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
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Authors:
- Walker, Keith W
- Publication Date: 1990
Media Info
- Features: Figures; References; Tables;
- Pagination: p. 19-22
- Monograph Title: Energy and environment 1990: transportation-induced noise and air pollution
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Serial:
- Transportation Research Record
- Issue Number: 1255
- Publisher: Transportation Research Board
- ISSN: 0361-1981
Subject/Index Terms
- TRT Terms: Dwellings; Electric insulating materials; Insulating materials; Ratings; Sound level; Walls
- Subject Areas: Design; Environment; Highways; Terminals and Facilities;
Filing Info
- Accession Number: 00497402
- Record Type: Publication
- ISBN: 030905009X
- Files: TRIS, TRB
- Created Date: Sep 30 1990 12:00AM