BSENIS04869-1:2018 BSI Standards Publication Licensedcopy:UniversityofLiverpool,UniversityofLiverpool,Versioncor Acoustics-Hearing protectors Part1:Subjectivemethodforthemeasurementof sound attenuation (IS0 4869-1:2018) bsi. BSENIS04869-1:2018 BRITISH STANDARD National foreword ThisBritishStandard is theUKimplementationofENIS04869-1:2018.It supersedes BSEN24869-1:1993,whichiswithdrawn. The UK participation in its preparation was entrusted to Technical Committee EH/1/1, Hearing. Alistoforganizationsrepresentedonthis committeecan be obtained on requestto its secretary. This publication does notpurportto includeall the necessaryprovisions of a contract.Users are responsible for its correct application. TheBritishStandardsInstitution2018 Published byBSI StandardsLimited2018 ISBN9780580858451 ICS13.340.20 CompliancewithaBritishStandardcannotconferimmunityfrom legal obligations. This British Standard was published under the authority of the StandardsPolicyandStrategyCommitteeon30November2018 Amendments/corrigendaissuedsincepublication Date Textaffected EUROPEAN STANDARD EN ISO 4869-1 NORME EUROPEENNE EUROPAISCHENORM November2018 ICS13.340.20 Supersedes EN24869-1:1992 1, Version correct as of 29/11/2018 English Version Acoustics - Hearing protectors - Part 1: Subjective method for the measurement of sound attenuation (IsO 4869-1:2018) Acoustique - Protecteurs individuels contre le Akustik- Gehorschutzer- Teil 1: Subjektive Methode bruit-Partie 1: Methode subjective de mesurage zurMessung der Schalldammung (IS0 4869-1:2018) de I'affaiblissement acoustique (IS0 4869-1:2018) This European Standard was approved by CEN on 23 April 2018. I, University of Liverpool, CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditionsfor giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre ortoany CENmember. This European Standard exists in three official versions (English, French, German). A version in any other language Management Centrehasthe samestatusastheofficialversions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary,Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. Licensed copy: University of Liverpool, cen EUROPEAN COMMITTEE FOR STANDARDIZATION COMITE EUROPEEN DE NORMALISATION EUROPAISCHES KOMITEE FUR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2018CEN All rights of exploitation in any form and by any means reserved Ref. No. EN IS0 4869-1:2018: E worldwide for CEN national Members