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Historical
ANSI/ASA S1.26-1995 (R2009)
Calculation of the Absorption of Sound by the Atmosphere
Provides the means to calculate atmospheric absorption losses of sound from any source for a wide range of meteorological conditions. The atmosphere is assumed to be still, homogeneous moist air of normal composition. Non-homogeneous atmospheres may be divided into horizontal layers within which homogeneous conditions may be assumed. Attenuation coefficients for pure-tone sounds are calculated by over ranges of frequency, and the humidity, pressure, and temperature of the atmosphere. For sounds analyzed by fractional-octave-band filters alternative methods are provided.
CONTENT PROVIDER
Acoustical Society of America [asa]
Acoustical Society of America [asa]