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Document ID (ISN)102002
CIS number 03-1383
Year 1998
Convention or series no. ISO/TR 4869-4
Title Acoustics - Hearing protectors - Part 4: Measurement of effective sound pressure levels for level-dependent sound-restoration ear-muffs
Original title Acoustique - Protecteurs individuels contre le bruit - Partie 4: Mesurage des niveaux effectifs de pression acoustique des serre-tête destinés à la restitution du son [in French]
Bibliographic information International Organization for Standardization (ISO), Case postale 56, 1211 Genève 20, Switzerland, 1st ed., 1998. iv, 7p. Illus. 3 ref.
Abstract This technical report specifies a physical test method for level-dependent sound-restoration ear-muffs. The physical measurements are made with the acoustic text fixture according to ISO/TR 4869-3 or with a suitable head and torso simulator with a suitable acoustic isolation. The results of this test in combination with the results from the ISO 4869-1 tests can be used to estimate the effective A-weighted sound pressure level when sound-restoration earmuffs are worn.
Descriptors (primary) hearing protection; earmuffs; noise level; ISO
Descriptors (secondary) report; standard; description of technique; noise level measurement
Document type F - Information notes, codes of practice, standards
Country / State or ProvinceISO
Subject(s) Personal protection
Broad subject area(s) Physical hazards
Browse category(ies) Noise
Hearing protection