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UNI EN ISO 4869-2 : 1998

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by

ACOUSTICS - HEARING PROTECTORS - ESTIMATION OF EFFECTIVE A-WEIGHTED SOUND PRESSURE LEVELS WHEN HEARING PROTECTORS ARE WORN

Superseded date

12-09-2022

Superseded by

UNI EN ISO 4869-2 : 2019

Published date

01-01-1998

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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
Annex ZA (normative) Normative references to international
         publications with their relevant European publications

Describes three methods of estimating the A weighted sound pressure levels effective when hearing protectors are worn. Coverage includes: Octave-band method, HML method, and SNR method. Also gives detailed tables.

DocumentType
Standard
PublisherName
Ente Nazionale Italiano di Unificazione (UNI)
Status
Superseded
SupersededBy

UNI 9432 : 2011 Acoustics - Determination ooccupational noise exposure

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