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Research on the effect of noise at different times of day: Models, methods and findingsSocial surveys of residents' responses to noise at different times of day are reviewed. Some of the discrepancies in published reports about the importance of noise at different times of day are reduced when the research findings are classified according to the type of time of day reaction model, the type of time of day weight calculated and the method which is used to estimate the weight. When the estimates of nighttime weights from 12 studies are normalized, it is found that they still disagree, but do not support stronger nighttime weights than those used in existing noise indices. Challenges to common assumptions in nighttime response models are evaluated. Two of these challenges receive enough support to warrant further investigation: the impact of changes in numbers of noise events may be less at night than in the day and nighttime annoyance may be affected by noise levels in other periods. All existing social survey results in which averages of nighttime responses were plotted by nighttime noise levels are reproduced.
Document ID
19850015064
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Fields, J. M. (Bionetics Corp. Hampton, VA, United States)
Date Acquired
September 5, 2013
Publication Date
April 1, 1985
Subject Category
Acoustics
Report/Patent Number
NAS 1.26:3888
NASA-CR-3888
Accession Number
85N23375
Funding Number(s)
CONTRACT_GRANT: NAS1-16978
PROJECT: RTOP 505-35-13-53
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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