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DIN EN ISO 4869-4:2000-10
Acoustics - Hearing protectors - Part 4: Measurement of effective sound pressure levels for level-dependent sound-restoration ear-muffs (ISO/TR 4869-4:1998); German version EN ISO 4869-4:2000
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Summary
The document specifies a physical test method for leveldependent sound restoration ear-muffs. The results of the tests 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 ear-muffs are worn.
Technical characteristics
| Publisher | Deutsche Institut für Normung e.V. (DIN) |
| Publication Date | 10/01/2000 |
| Cancellation Date | 11/01/2016 |
| Page Count | 11 |
| EAN | --- |
| ISBN | --- |
| Weight (in grams) | --- |
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