NF EN ISO 4869-4 : 2000
Withdrawn
Withdrawn
ACOUSTICS - HEARING PROTECTORS - PART 4: MEASUREMENT OF EFFECTIVE SOUND PRESSURE LEVELS FOR LEVEL-DEPENDENT SOUND-RESTORATION EAR-MUFFS
Published date
01-12-2013
Publisher
Withdrawn date
12-15-2017
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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.
| DevelopmentNote |
Indice de Classement: S31-062-4. Supersedes NFS 31 062-4 (04/2004)
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| DocumentType |
Standard
|
| PublisherName |
Association Francaise de Normalisation
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| Status |
Withdrawn
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| Supersedes |
| Standards | Relationship |
| UNE-EN ISO 4869-4:2000 | Identical |
| I.S. EN ISO 4869-4:2000 | Identical |
| BS EN ISO 4869-4:2000 | Identical |
| EN ISO 4869-4:2000 | Identical |
| ISO/TR 4869-4:1998 | Identical |
| DIN EN ISO 4869-4:2000-10 | Identical |
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