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ISO 9613-1:1993

Acoustics — Attenuation of sound during propagation outdoors — Part 1: Calculation of the absorption of sound by the atmosphere

Jun 3, 1993

General information

90.20     Jan 15, 2026

ISO

ISO/TC 43/SC 1

International Standard

17.140.01  

French   English  

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Scope

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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PUBLISHED
ISO 9613-1:1993
90.20 Standard under periodical review
Jan 15, 2026

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