Community Response to High-Energy Impulsive Sounds An Assessment of the Field Since 1981 (1996) / Chapter Skim
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Pages 33-38
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From page 33... ...
where D is the constant 61.1 chosen to minimize the variance of the set of available field observations of the annoyance of high-energy impulsive noise exposure. Note that CSEL values of individual events that are summed to form CDNL must exceed 85 dB (75 dB at night)
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From page 34... ...
Highly variable noise environment containing a mixture of impulsive and nonimpulsive sounds; measurements or other information available about levels of individual impulsive noise events No alternative to reliance on equal energy hypothesis; base predictions on Method 1 (using CDNL as a predictor variable) Equal-energy hypothesis is adequate; predictions may be based on Method 1; predictions made by Method 2 (based on CIDNL)
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From page 35... ...
Third, it is unlikely that information about effects of sonic booms in the highexposure ranges of CDNL can ever be collected. CDNL values in studies of community response to high-energy impulsive noise exposure that have been conducted to date are all confined to the region below LC`3n = 70 dB.
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From page 36... ...
Judgments of the annoyance of both impulsive and nonimpulsive sounds should be solicited over a wide range of levels. FURTHER ANALYTIC EFFORTS These recommendations should be reviewed as additional information about the annoyance of high-energy impulsive noise exposure (preferably from field studies)
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From page 37... ...
Appendices
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