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Norm
ISO 4869-1:1990
Issue date: 1990 12 20
Acoustics — Hearing protectors — Part 1: Subjective method for the measurement of sound attenuation
Specifies a method for measuring sound attenuation at the threshold of hearing. The procedure is designed to yield values close to the maximum attenuation which are not n...
Withdrawn: 2018 10 04
Publisher:
International Organization for Standardization
Format:
Digital | 7 Pages
Language:
English
Currently valid:
ICS
Specifies a method for measuring sound attenuation at the threshold of hearing. The procedure is designed to yield values close to the maximum attenuation which are not normally attained under field conditions. The values reflect the attenuating characteristics only to the extent that users wear the device in the same manner as did the test subjects. Data are collected at low sound pressure levels but which are also representative of the values at higher sound pressure levels.
ISO 4869-1:2018
2018 10 04
Acoustics — Hearing protectors — Part 1: Subjective method for the measurement of sound attenuation
Norm
ISO 4869-1:1990
1990 12 20
Acoustics — Hearing protectors — Part 1: Subjective method for the measurement of sound attenuation
Norm
↖
ISO 4869:1981
1981 12 01
Acoustics — Measurement of sound attenuation of hearing protectors — Subjective method
Norm
Norm
Issue date :
2018 10 04
Acoustics — Hearing protectors — Part 1: Subjective method for the measurement of sound attenuation
