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.
Số hiệu tiêu chuẩn
ISO 9613-1
Tên tiêu chuẩn
Acoustics; attenuation of sound during propagation outdoors; part 1: calculation of the absorption of sound by the atmosphere
Ngày phát hành
1993-06-00
Tiêu chuẩn tương đương
GB/T 17247.1 (2000), IDT * GB/T 17247.1 (2000), NEQ * JIS Z 8738 (1999-03-20), IDT * PN-ISO 9613-1 (2000-12-22), IDT * SS-ISO 9613-1 (1995-05-05), IDT * GOST 31295.1 (2005), IDT * UNI ISO 9613-1:2006 (2006-09-07), IDT * CSN ISO 9613-1 (1995-11-01), IDT * DS/ISO 9613-1 (1993-08-31), IDT
Thay thế cho
ISO/DIS 9613-1 (1990-09)
Từ khóa
Acoustic absorption * Acoustics * Airborne noise * Mathematical calculations * Noise * Sound absorption * Sound attenuation * Airborne sound