NDLI: Sonic boom acceptability studies

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Sonic boom acceptability studies

Content Provider	NASA Technical Reports Server (NTRS)
Author	Leatherwood, Jack D. Shepherd, Kevin P. McCurdy, David A. Sullivan, Brenda M.
Copyright Year	1992
Description	The determination of the magnitude of sonic boom exposure which would be acceptable to the general population requires, as a starting point, a method to assess and compare individual sonic booms. There is no consensus within the scientific and regulatory communities regarding an appropriate sonic boom assessment metric. Loudness, being a fundamental and well-understood attribute of human hearing was chosen as a means of comparing sonic booms of differing shapes and amplitudes. The figure illustrates the basic steps which yield a calculated value of loudness. Based upon the aircraft configuration and its operating conditions, the sonic boom pressure signature which reaches the ground is calculated. This pressure-time history is transformed to the frequency domain and converted into a one-third octave band spectrum. The essence of the loudness method is to account for the frequency response and integration characteristics of the auditory system. The result of the calculation procedure is a numerical description (perceived level, dB) which represents the loudness of the sonic boom waveform.
File Size	1099664
Page Count	18
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19940028994
Archival Resource Key	ark:/13960/t0qr9qv82
Language	English
Publisher Date	1992-04-01
Access Restriction	Open
Subject Keyword	Acoustics Loudness Human Reactions Waveforms Atmospheric Attenuation Sonic Booms Frequencies Signatures Noise Measurement Aircraft Configurations Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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