I.S. EN ISO 4869-2:1996
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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ACOUSTICS - HEARING PROTECTORS - PART 2: ESTIMATION OF EFFECTIVE A-WEIGHTED SOUND PRESSURE LEVELS WHEN HEARING PROTECTORS ARE WORN
Hardcopy , PDF
13-12-2018
English
01-01-1996
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
Dates of withdrawal of national standards are available from NSAI.
Foreword
Introduction
1 Scope
2 Normative references
3 Definitions
4 Measurement of sound attenuation of hearing protectors
5 Calculation of the assumed protection value APV[fx] of a
hearing protector for a selected protection performance
6 Octave-band method
7 HML method
8 SNR method
Annex A (informative) Example of the calculation of the
assumed protection values, APV[fx]
Annex B (informative) Example of the calculation of L'[Ax]
according to the octave-band method
Annex C (informative) Example of calculation and use of H,
M and L values
Annex D (informative) Example of the calculation and use
of SNR values
Annex E (informative) Bibliography
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