漏出声衰减检测

NF S30-009-1980 声学.空气中声音的衰减

Acoustics. Attenuation of sound in air.

SAE AIR 5662-2006 预测飞机噪声侧向衰减

This document describes analytical methods for calculating the attenuation of the level of the sound propagating from an airplane to locations

Method for Predicting Lateral Attenuation of Airplane Noise

DIN EN ISO 11821:1997 声学.可移动声屏障声衰减现场测量

The document specifies methods for the measurement of the sound attenuation performance of removable screens in situ

Acoustics - Measurement of the in situ sound attenuation of a removable screen (ISO 11821:1997); German version EN ISO 11821:1997

ASTM E2930-13(2021 压力衰减泄漏试验方法的标准做法

Standard Practice for Pressure Decay Leak Test Method

GB/T 19887-2005 声学 可移动屏障声衰减的现场测量

本标准规定了室内或室外可移动屏障现场声衰减性能的评价方法，本标准是插人损失测量的工程及方法，测量既可用实际声源，也可用人工声源进行。 根据本标准计算的可移动声屏障的声衰减性能，与下列因素有关： ——围绕屏障边缘的声绕射； ——屏障构件的声透射

Acoustics-Measurement of the in situ sound attenuation of a removable screen

SR ISO 4869:1981 声学．护耳器声衰减的测量．主观法

Prezentul Standard Interna?ional stabile?te o metod? subiectiv? de m?surare a atenu?rii sonore a protectorilor individuali Tmpotriva zgomotului

Acoustics. Measurement of sound attenuation of hearing protectors. Subjective method

GB/T 7584-1987 声学 护耳器声衰减的测量 主观法

本标准具体规定了用听阈来确定护耳器声衰减的主观判断测量方法。可以对在类似条件下获得的声衰减性能数据进行比较，也能对护耳器各种型号按声衰减大小排队分档和分级，便于使用者根据需要进行选择，并能对性能有重要影响的结构特点和设计进行评价。 本标准参照采用ISO4869-1981《声学-护耳器声

Acoustics--Measurement of sound attenuation of hearing protectors--Subjective method

ISO 11821:1997 声学 可移动声屏障声衰减的现场测量

This International Standard specifies methods for evaluating the in situ sound attenuation performance of a removable screen, either indoors

Acoustics - Measurement of the in situ sound attenuation of a removable screen

BS EN ISO 11821:1997 声学.可移动声屏障声衰减的现场测量

This International Standard specifies methods for evaluating the in situ sound attenuation performance of a removable screen, either indoors

Acoustics - Measurement of the in situ sound attenuation of a removable screen

GB/Z 38251-2019 声学 换流站声传播衰减计算 工程法

Acoustics—Calculation of sound attenuation during propagation for electrical converter station—Engineering method

EN 24869-1-1992 声学.听力保护器.主观法测量声衰减

Acoustics - Hearing Protectors - Subjective Method for the Measurement of Sound Attenuation (ISO 4896-1 : 1990)

KS I ISO 9613-2:2021 室外声衰减的一般计算方法

Acoustics — Attenuation of sound during propagation outdoors —Part 2: General method of calculation

NF S31-650-1997 声学.可移动屏蔽就地声音衰减的测量

Acoustics. Measurement of the in situ sound attenuation of a removable screen.

GOST 30690-2000 移动隔声屏.使用条件下声衰减的测定

Removable acoustical screens. Methods for determination of the in situ sound attenuation

ISO 4869:1981 声学.听力保护器声衰减的测量.主观法

Acoustics — Measurement of sound attenuation of hearing protectors — Subjective method

NF S30-009-1980 声学.空气中声音的衰减

Acoustics. Attenuation of sound in air.

SAE AIR 5662-2006 预测飞机噪声侧向衰减

This document describes analytical methods for calculating the attenuation of the level of the sound propagating from an airplane to locations

Method for Predicting Lateral Attenuation of Airplane Noise

DIN EN ISO 11821:1997 声学.可移动声屏障声衰减现场测量

The document specifies methods for the measurement of the sound attenuation performance of removable screens in situ

Acoustics - Measurement of the in situ sound attenuation of a removable screen (ISO 11821:1997); German version EN ISO 11821:1997

ASTM E2930-13(2021 压力衰减泄漏试验方法的标准做法

Standard Practice for Pressure Decay Leak Test Method

GB/T 19887-2005 声学 可移动屏障声衰减的现场测量

本标准规定了室内或室外可移动屏障现场声衰减性能的评价方法，本标准是插人损失测量的工程及方法，测量既可用实际声源，也可用人工声源进行。 根据本标准计算的可移动声屏障的声衰减性能，与下列因素有关： ——围绕屏障边缘的声绕射； ——屏障构件的声透射

Acoustics-Measurement of the in situ sound attenuation of a removable screen

SR ISO 4869:1981 声学．护耳器声衰减的测量．主观法

Prezentul Standard Interna?ional stabile?te o metod? subiectiv? de m?surare a atenu?rii sonore a protectorilor individuali Tmpotriva zgomotului

Acoustics. Measurement of sound attenuation of hearing protectors. Subjective method

GB/T 7584-1987 声学 护耳器声衰减的测量 主观法

本标准具体规定了用听阈来确定护耳器声衰减的主观判断测量方法。可以对在类似条件下获得的声衰减性能数据进行比较，也能对护耳器各种型号按声衰减大小排队分档和分级，便于使用者根据需要进行选择，并能对性能有重要影响的结构特点和设计进行评价。 本标准参照采用ISO4869-1981《声学-护耳器声

Acoustics--Measurement of sound attenuation of hearing protectors--Subjective method

ISO 11821:1997 声学 可移动声屏障声衰减的现场测量

This International Standard specifies methods for evaluating the in situ sound attenuation performance of a removable screen, either indoors

Acoustics - Measurement of the in situ sound attenuation of a removable screen

BS EN ISO 11821:1997 声学.可移动声屏障声衰减的现场测量

This International Standard specifies methods for evaluating the in situ sound attenuation performance of a removable screen, either indoors

Acoustics - Measurement of the in situ sound attenuation of a removable screen

GB/Z 38251-2019 声学 换流站声传播衰减计算 工程法

Acoustics—Calculation of sound attenuation during propagation for electrical converter station—Engineering method

EN 24869-1-1992 声学.听力保护器.主观法测量声衰减

Acoustics - Hearing Protectors - Subjective Method for the Measurement of Sound Attenuation (ISO 4896-1 : 1990)

KS I ISO 9613-2:2021 室外声衰减的一般计算方法

Acoustics — Attenuation of sound during propagation outdoors —Part 2: General method of calculation

NF S31-650-1997 声学.可移动屏蔽就地声音衰减的测量

Acoustics. Measurement of the in situ sound attenuation of a removable screen.

GOST 30690-2000 移动隔声屏.使用条件下声衰减的测定

Removable acoustical screens. Methods for determination of the in situ sound attenuation

ISO 4869:1981 声学.听力保护器声衰减的测量.主观法

Acoustics — Measurement of sound attenuation of hearing protectors — Subjective method