EN ISO 4869-1:2018

Acoustics - Hearing protectors - Part 1: Subjective method for the measurement of sound attenuation (ISO 4869-1:2018)

Publication date:   Feb 14, 2019

General information

60.60 Standard published   Nov 21, 2018

CEN

CEN/TC 211 Acoustics

European Norm

13.340.20   Head protective equipment

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Scope

This document 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.
NOTE Due to masking from physiological noise in the occluded ear tests, sound attenuations below 500 Hz can be overestimated by a few decibels.

Related legislation

Legislation related to this standard

2016/425

Regulation (EU) 2016/425 of the European Parliament and of the Council of 9 March 2016 on personal protective equipment and repealing Council Directive 89/686/EEC

Life cycle

PREVIOUSLY

WITHDRAWN
EN 24869-1:1992

NOW

PUBLISHED
EN ISO 4869-1:2018
60.60 Standard published
Nov 21, 2018