Norm

NEN-EN-ISO 4869-1:2018 en

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

80,61 97,54 Incl BTW

Over deze norm

Status Definitief
Aantal pagina's 18
Commissie Akoestiek
Gepubliceerd op 01-11-2018
Taal Engels
NEN-EN-ISO 4869-1 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 can 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 document is inapplicable, as 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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