Accession Number : ADA214878


Title :   Cumulative Airport Noise Exposure Metrics: An Assessment of Evidence for Time-of-Day Weightings. Revision


Corporate Author : SOUTHWEST RESEARCH INST SAN ANTONIO TX


Personal Author(s) : Fields, James M.


Report Date : NOV 1989


Pagination or Media Count : 180


Abstract : The differential impact of noise on residents at different times of day is examined in analyses of the original machine-readable data from ten community surveys and in detailed reviews of the published results from 20 additional surveys. Analyses are conducted using alternative community response measures and analysis techniques. The primary objective of these analyses is to determine the relative impact of noise during the daytime and nighttime by estimating the value of a time-day weighting in the adjusted energy model. Some support is found for nighttime and evening weightings, however, the estimates of these time-of-day weightings are found to be highly accurate. Examinations of the factors affecting this accuracy lead to the conclusion that studies of community response to noise will not provide a usefully accurate estimation of the time-of-day weighting parameter in the adjusted energy model. This report provides data on proportions of the United States population engaged in noise-sensitive activities at different times of day. The report reproduces all social survey results in which averages of nighttime response are plotted by nighttime noise levels. Analyses are conducted of the relationship between daytime and nighttime noise environments around United States airports. Keywords: Aircraft noise, Annoyance, Sleep, Environmental impact, Time-of-day.


Descriptors :   *AIRCRAFT NOISE , SLEEP , COMMUNITIES , IMPACT , EXPOSURE(GENERAL) , MODELS , ENERGY , ACCURACY , POPULATION , ESTIMATES , ENVIRONMENTAL IMPACT , SURVEYS , RESPONSE , LEVEL(QUANTITY) , NIGHT , NOISE , AIRPORTS , MACHINE CODING , NOISE(SOUND) , UNITED STATES , ENVIRONMENTS


Subject Categories : ACOUSTICS
      NOISE POLLUTION AND CONTROL


Distribution Statement : APPROVED FOR PUBLIC RELEASE