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BS EN ISO 4869-4:2000

Current
Current

The latest, up-to-date edition.

Acoustics. Hearing protectors Measurement of effective sound pressure levels for level-dependent sound-restoration ear muffs
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

08-15-2000

Publisher

British Standards Institution

Specifies a physical test procedure for level-dependent sound-restoration ear-muffs. The physical methods are made with the acoustic test fixture (ATF) according to ISO/TR 4869-3 according to ISO/TR 4869-3 or with a suitable head and torso simulator (HATS) with a suitable acoustic isolation. The test results can be used in conjunction with the results from the ISO 4869-1 tests to estimate the effective A-weighted sound pressure level when sound restoration ear-muffs are worn. Not suitable for measurement of the effective sound pressure level under ear-muffs in the case of impulsive noise or for active noise reduction ear-muffs.

Committee
EH/1/1
DevelopmentNote
Supersedes 99/564538 DC. (10/2005)
DocumentType
Standard
Pages
18
PublisherName
British Standards Institution
Status
Current
SupersededBy
Supersedes

PD 6545:2005 Intended use of human head and ear simulators-guide

IEC 61094-4:1995 Measurement microphones - Part 4: Specifications for working standard microphones
ISO 4869-1:1990 Acoustics Hearing protectors Part 1: Subjective method for the measurement of sound attenuation
ISO 4869-2:1994 Acoustics Hearing protectors Part 2: Estimation of effective A-weighted sound pressure levels when hearing protectors are worn
ISO/TR 4869-3:1989 Acoustics Hearing protectors Part 3: Simplified method for the measurement of insertion loss of ear-muff type protectors for quality inspection purposes
IEC 61260:1995 Electroacoustics - Octave-band and fractional-octave-band filters
IEC 60651:1979+AMD1:1993+AMD2:2000 CSV Sound level meters

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Hardcopy - English
PDF - English
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