ISO-9613-1 › Acoustics - Attenuation of sound during propagation outdoors - Part 1: Calculation of the absorption of sound by the atmosphere
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Specifies an analytical method of calculating the attenuation of sound as a result of atmospheric absorption for a variety of meteorological conditions. For pure-tone sounds, attenuation due to atmospheric absorption is specified in terms of an attenuation coefficient as a function of the frequency of the sound (50 Hz to 10 kHz), the temperature (- 20 °C to + 50 °C), the relative humidity (10 % to 100 %) and pressure (101,325 kPa) of the air. Formulae are also given for wider ranges (e.g. ultrasonic frequencies, lower pressure) and for other than pure tones.
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17.140.01 (Acoustic measurements and noise abatement in general Including acoustic insulation)
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Document Number
ISO 9613-1:1993
Revision Level
1ST EDITION
Status
Current
Publication Date
June 1, 1993
Committee Number
ISO TC 43/SC 1