SN EN ISO 4869-4 : 2000
Current
The latest, up-to-date edition.
ACOUSTICS - HEARING PROTECTORS - PART 4: MEASUREMENT OF EFFECTIVE SOUND PRESSURE LEVELS FOR LEVEL-DEPENDENT SOUND-RESTORATION EAR-MUFFS
12-01-2013
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.
DocumentType |
Standard
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PublisherName |
Swiss Standards
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Status |
Current
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Standards | Relationship |
I.S. EN ISO 4869-4:2000 | Identical |
UNI EN ISO 4869-4 : 2002 | Identical |
BS EN ISO 4869-4:2000 | Identical |
EN ISO 4869-4:2000 | Identical |
UNE-EN ISO 4869-4:2000 | Identical |
ISO/TR 4869-4:1998 | Identical |
DIN EN ISO 4869-4:2000-10 | Identical |
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