标准摘要
[中文适用范围]： 指定计算各种气象条件下大气吸收导致的声音衰减的分析方法。 对于纯音声音，由于大气吸收而引起的衰减以衰减系数来指定，该衰减系数是声音频率（50 Hz 至 10 kHz）、温度（- 20 至 + 50 ）、相对湿度（ 10 % 至 100 %）和空气压力（101,325 kPa）。 还给出了更宽范围（例如超声波频率、更低压力）和非纯音的公式。 [外文原描述]： 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.
英文名称Acoustics — Attenuation of sound during propagation outdoors — Part 1: Calculation of the absorption of sound by the atmosphere