BS ISO 4869-6:2019

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Acoustics. Hearing protectors – Determination of sound attenuation of active noise reduction earmuffs

Published By	Publication Date	Number of Pages
BSI	2019	20

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Description

This document is concerned with active noise reduction (ANR) earmuffs. It specifies the test methods for the determination of the active insertion loss and calculation procedures for deriving the total attenuation. For this aim, the values of sound attenuation in the passive mode also have to be known and are determined according to ISO 4869‑1. These methods are intended for steady noise exposures and are not applicable to noises containing impulsive components.

The test methods account for the acoustical interaction between the wearer and the device using measurements of passive (REAT) and active microphone-in-real-ear (MIRE) measurements as specified in ISO 4869‑1 and ISO 11904‑1, respectively.

Additional information

Status	Confirmed
Pages	20
Publication Date	2019-02-05
ISBN	978 0 580 86901 3
Standard Number	BS ISO 4869-6:2019
Title	Acoustics. Hearing protectors – Determination of sound attenuation of active noise reduction earmuffs
Identical National Standard Of	ISO 4869-6:2019
Descriptors	Acoustics, Noise control (acoustic), Testing conditions, Sound intensity, Protective clothing, Acoustic measurement, Ear muffs, Test equipment, Sound insulation, Acoustic testing, Safety devices, Ear protectors
Publisher	BSI
Committee	EH/1/1

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BS ISO 4869-6:2019

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