EN ISO 4869-2:2018

Acoustics - Hearing protectors - Part 2: Estimation of effective A-weighted sound pressure levels when hearing protectors are worn (ISO 4869-2:2018) EN ISO 4869-2:2018

Publication date:   Feb 14, 2019

General information

60.60 Standard published   Nov 21, 2018


CEN/TC 211 Acoustics

European Norm

13.340.20   Head protective equipment



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This document specifies three methods (the octave-band, HML and SNR methods) of estimating the A-weighted sound pressure levels effective when hearing protectors are worn. The methods are applicable to either the sound pressure level or the equivalent continuous sound pressure level of the noise. Although primarily intended for steady noise exposures, the methods are also applicable to noises containing impulsive components. It is possible that these methods could not be suitable for use with peak sound pressure level measurements.
The octave-band, H, M, L or SNR values are suitable for establishing sound attenuation criteria for selecting or comparing hearing protectors, and/or setting minimum acceptable sound attenuation requirements.

Related legislation

Legislation related to this standard


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


EN ISO 4869-2:1995/AC:2007

EN ISO 4869-2:1995


EN ISO 4869-2:2018
60.60 Standard published
Nov 21, 2018