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Human Response to Low-Intensity Sonic Booms Heard Indoors and OutdoorsTest subjects seated inside and outside a house were exposed to low-intensity N-wave sonic booms during a 3-week test period in June 2006- The house was instrumented to measure the booms both inside and out. F-18 aircraft were flown to achieve a variety of boom overpressures from approximately .1 to .6 psf During four test days, seventy-seven test subjects heard the booms while seated inside and outside the house. Using the Magnitude Estimation methodology and artificial reference sounds ; the subjects rated the annoyance of the booms. Since the same subjects heard similar booms both inside and outside the house, comparative ratings of indoor and outdoor annoyance were obtained. For a given metric level, indoor subjects gave higher annoyance scores than outdoor subjects. For a given boom; annoyance scores inside were on average the same as those outside. In a post-test questionnaire, the majority of subjects rated the indoor booms as more annoying than the outdoor ones. These results are discussed in this paper.
Document ID
20100019158
Acquisition Source
Langley Research Center
Document Type
Technical Memorandum (TM)
Authors
Sullivan, Brenda M. (Lockheed Martin Corp. Hampton, VA, United States)
Klos, Jacob (NASA Langley Research Center Hampton, VA, United States)
Buehrle, Ralph D. (NASA Langley Research Center Hampton, VA, United States)
McCurdy, David A. (NASA Langley Research Center Hampton, VA, United States)
Haering, Edward A., Jr. (NASA Dryden Flight Research Center Edwards, CA, United States)
Date Acquired
August 24, 2013
Publication Date
April 1, 2010
Subject Category
Acoustics
Report/Patent Number
NF1676L-10465
NASA/TM-2010-216685
L-19846
Funding Number(s)
WBS: WBS 984754.02.07.07.18.03
Distribution Limits
Public
Copyright
Public Use Permitted.

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