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ASA S1.26-2014 (R2024)

Methods for Calculation of the Absorption of Sound by the Atmosphere
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ASA S1.26-2014 (R2024)

Methods for Calculation of the Absorption of Sound by the Atmosphere

PUBLISH DATE 2014
ASA S1.26-2014 (R2024)
This Standard provides the means to calculate atmospheric absorption losses of sound from any source, moving or stationary, for a wide range of meteorological conditions. The atmosphere is assumed to be still, homogeneous moist air of normal composition. Non-homogeneous atmospheres can be divided into horizontal layers within which homogeneous conditions can be assumed. Attenuation coefficients for puretone sounds are calculated by means of equations (or a table) over ranges of frequency, and the humidity, pressure, and temperature of the atmosphere. For sounds analyzed by fractional-octave-band filters (e.g., one-third-octave-band filters), alternative methods are provided in annexes to calculate the attenuation caused by atmospheric absorption from that specified for pure-tone sounds.
SDO ASA: Acoustical Society of America
Document Number S1.26
Publication Date Aug. 28, 2014
Language en - English
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