Reference number
ISO 4869-6:2019
ISO 4869-6:2019
© ISO 2024
International Standard
ISO 4869-6:2019
Acoustics — Hearing protectors — Part 6: Determination of sound attenuation of active noise reduction earmuffs
Edition 1
2019-02
2019-02
ISO 4869-6:2019
30424
Publicado
(Edición 1, 2019)
Esta publicación se revisó y confirmó por última vez en 2024.
Por lo tanto, esta versión es la actual.
Resumen
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.
Informaciones generales
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Estado: PublicadoFecha de publicación: 2019-02Etapa: Norma Internacional confirmada [90.93]
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Edición: 1Número de páginas: 11
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Comité Técnico :ISO/TC 43/SC 1ICS :13.340.20
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