14/30297757 DC : 0
NA
Status of Standard is Unknown
BS EN ISO 4869-2 - ACOUSTICS - HEARING PROTECTORS - PART 2: ESTIMATION OF EFFECTIVE A-WEIGHTED SOUND PRESSURE LEVELS WHEN HEARING PROTECTORS ARE WORN
Hardcopy , PDF
English
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and 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'[p,Ax] according
to the octave-band method
Annex C (informative) - Example of the calculation and use of
H, M and L values
Annex D (informative) - Example of the calculation and use of SNR values
Annex E (informative) - Uncertainty of calculations
Bibliography
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