International Standard
ISO 4869-1:2018
Acoustics — Hearing protectors — Part 1: Subjective method for the measurement of sound attenuation
Reference number
ISO 4869-1:2018
Edición 2
2018-10
International Standard
Vista previa
ISO 4869-1:2018
65581
No disponible en español
Publicado (Edición 2, 2018)
Esta norma se revisó y confirmó por última vez en 2024. Por lo tanto, esta versión es la actual.

ISO 4869-1:2018

ISO 4869-1:2018
65581
Idioma
Formato
CHF 96
Convertir Franco suizo (CHF) a tu moneda

Resumen

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.

Informaciones generales

  •  : Publicado
     : 2018-10
    : Norma Internacional confirmada [90.93]
  •  : 2
     : 18
  • ISO/TC 43/SC 1
    13.340.20 
  • RSS actualizaciones

Got a question?

Check out our FAQs

Customer care
+41 22 749 08 88

Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)