GSO ISO 4869-6:2022

ISO 4869-6:2019
Gulf Standard   Current Edition · Approved on 12 May 2022

Acoustics — Hearing protectors — Part 6: Determination of sound attenuation of active noise reduction earmuffs

GSO ISO 4869-6:2022 Files

GSO ISO 4869-6:2022 Scope

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.

Best Sellers From Metrology Sector

GSO OIML R87:2021
OIML R87:2016 
Gulf Standard
Quantity of product in prepackages
GSO OIML R79:2021
OIML R79:2015 
Gulf Standard
Labeling requirements for prepackages
OS GSO OIML R76-1:2009
OIML R 76-1:2006 
Omani Standard
Non-automatic weighing instruments – Part 1: Metrological and technical requirements - Tests
GSO OIML R 76-1:2009
OIML R 76-1:2006 
Gulf Standard
Non-automatic weighing instruments – Part 1: Metrological and technical requirements - Tests

Recently Published from Metrology Sector

OS GSO 162:1993
GSO 162:1993 
Omani Standard
VERIFICATION METHOD FOR COMMERCIAL LENGTH MEASURES
OS GSO 266:1994
GSO 266:1994 
Omani Standard
Method of verification of weighbridges for road vehicles (Trucks)
OS GSO 1466:2002
GSO 1466:2002 
Omani Standard
Metals hardness values tabels: test of tensile and hardness
OS GSO CISPR 15:2002
CISPR 15:1999 
Omani Standard
Limits and methods of measurement of radio disturbance characteristics of electrical lighting and similar equipment