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Standard
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NBN EN ISO 4869-4:2000
Acoustics - Hearing protectors - Part 4: Measurement of effective sound pressure levels for level-dependent sound-restoration ear-muffs (ISO/TR 4869-4:1998)
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Summary
The standard specifies methods for measuring sound attenuation of amplitude sensitive hearing protectors valid for relevant sound pressure levels at normal exposure to noises.
Technical characteristics
| Publisher | Bureau de Normalisation Belge (NBN) |
| Publication Date | 07/20/2000 |
| Cancellation Date | 11/30/2000 |
| Page Count | 19 |
| EAN | --- |
| ISBN | --- |
| Weight (in grams) | --- |
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