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 Province | ISO |
Subject(s) |
Personal protection
|
Broad subject area(s) |
Physical hazards
|
Browse category(ies) |
Noise Hearing protection
|