Norm

ISO/DIS 4869-1:2015 en

Akoestiek - Gehoorbeschermers - Deel 1: Subjectieve methode voor het meten van de geluidverzwakking

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Over deze norm

Status Ontwerp
Aantal pagina's 15
Commissie Akoestiek
Gepubliceerd op 15-01-2015
Taal Engels
This International Standard specifies a subjective method for measuring sound attenuation of hearing protectors at the threshold of hearing. The method is a laboratory method designed to yield reproducible values under controlled measurement conditions. The values reflect the attenuating characteristics of the hearing protector only to the extent that users wear the device in the same manner as did the test subjects. For a more representative indication of field performance the methods of ISO/TS 4869-5 may be used. This test method yields data which are collected at low sound pressure levels (close to the threshold of hearing) but which are also representative of the attenuation values of hearing protectors at higher sound pressure levels. An exception occurs in the case of amplitude-sensitive hearing protectors for sound pressure levels above the point at which their level-dependent characteristics become effective. At those sound pressure levels the method specified in this International Standard is inapplicable; it will usually underestimate sound attenuation for these devices.

Details

ICS-code 13.340.20
Nederlandse titel Akoestiek - Gehoorbeschermers - Deel 1: Subjectieve methode voor het meten van de geluidverzwakking
Engelse titel Acoustics - Hearing protectors - Part 1: Subjective method for the measurement of sound attenuation
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