EN 352-8:2008

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Hearing protectors - Safety requirements and testing - Part 8: Entertainment audio ear-muffsProtecteurs individuels contre le bruit - Exigences de sécurité et essais - Partie 8 : Serre-tete audio de divertissementGehörschützer - Sicherheitstechnische Anforderungen und Prüfungen - Teil 8: Audiokapselgehörschützer für Unterhaltungszwecke13.340.20Varovalna oprema za glavoHead protective equipmentICS:SIST EN 352-8:2008en,fr,deTa slovenski standard je istoveten z:EN 352-8:200801-julij-2008SIST EN 352-8:2008SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 352-8April 2008ICS 13.340.20 English VersionHearing protectors - Safety requirements and testing - Part 8:Entertainment audio ear-muffsProtecteurs individuels contre le bruit - Exigences desécurité et essais - Partie 8 : Serre-tête audio dedivertissementGehörschützer - Sicherheitstechnische Anforderungen undPrüfungen - Teil 8: Audiokapselgehörschützer fürUnterhaltungszweckeThis European Standard was approved by CEN on 21 March 2008.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2008 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 352-8:2008: E

Test results, uncertainty of measurement.10 Annex ZA (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive 89/686/EEC.12 Bibliography.13

EN 352-1 deals with requirements for ear-muffs, EN 352-2 with ear-plugs, EN 352-3 with ear-muffs attached to industrial safety helmets. EN 13819 parts 1 and 2 deal with testing plans common to all types of hearing protectors covered by this series of European Standards.
Additional safety requirements and the associated test procedures for level-dependent ear-muffs are contained in EN 352-4, for active noise reduction ear-muffs in EN 352-5, for ear-muffs with safety-related electrical audio input in EN 352-6 and for level-dependent ear-plugs in EN 352-7. An associated standard EN 458 [2] covers selection, use, care and maintenance of hearing protection. The particular requirement for hearing protectors in relation to their ability to reduce noise to below daily limit levels set by Directive 2003/10/EC "on the protection of workers from the risks related to exposure to noise at work" is addressed in the standard by means of a limitation of that sound pressure level effective to the ear which is generated by the entertainment audio equipment of the ear-muff. This limitation is to be tested and reported at full volume setting. The sound pressure level limit for the reproduced sound of the audio entertainment is limited to 82 dB(A). Completion of the information given on entertainment audio ear-muffs by the passive attenuation data reported within EN 352-1, which is required by this standard, enables the user to fulfil the particular requirement on daily limit levels set by Directive 2003/10/EC.
Entertainment audio ear-muffs are designed to provide not only sound attenuation to ambient sound but also to provide entertainment audio via built-in loudspeakers. The entertainment audio signal can be transmitted by radio (broadcast or local plant programmes) or by wire or other communication. The audio signal transmission is for entertainment and not for safety or work-related purposes. This part of the standard is a specification intended for type approval purposes, for which four sets of specimen ear-muffs are tested (further samples may be required for testing under EN 352-1 or EN 352-3, as appropriate).
The requirements and tests of the standard are concerned primarily with the entertainment audio performance of the ear-muffs. The standard may be applied to ear-muffs for fitting to industrial safety helmets.

EN 13819-1, Hearing protectors — Testing — Part 1: Physical test methods EN 13819-2, Hearing protectors — Testing — Part 2: Acoustic test methods EN ISO 11904-1:2002, Acoustics — Determination of sound immission from sound sources placed close to the ear — Part 1: Technique using a microphone in a real ear (MIRE technique) (ISO 11904-1:2002) 3 Terms and definitions For the purposes of this Standard, the terms and definitions given in EN 352-1:2002 or EN 352-6:2002, as appropriate, together with the following apply. 3.1 diffuse field related sound pressure level sound pressure level of a diffuse sound field which will give rise to the measured ear canal sound pressure level, when a subject is exposed to a diffuse field (EN ISO 11904-1:2002, Clause 3.6)
NOTE Ear canal sound pressure level is the equivalent continuous sound pressure level measured at the ear canal measurement position (EN ISO 11904-1:2002, Clause 3.2). Ear canal measurement position is the position in the ear canal where the sound pressure is measured (EN ISO 11904-1:2002, Clause 3.1). 3.2 entertainment audio ear-muffs ear-muffs additionally providing reproduced sound for entertainment purposes
NOTE They may be designed with an electrical audio input or with built-in broadcast receivers. Or they may be part of a complete system composed of transmitters and receiving audio ear-muffs.

4 Requirements 4.1 General Entertainment audio ear-muffs shall meet the requirements of EN 352-1 (or EN 352-3, as appropriate). Additional requirements are listed below. 4.2 Materials and construction The electronic circuit of the entertainment audio ear-muff shall meet the electrical safety and EMC requirements appropriate to this class of equipment. 4.3 Performance 4.3.1 General Entertainment audio ear-muffs shall meet all the performance requirements of EN 352-1 (or EN 352-3, as appropriate), including the minimum attenuation requirement in their passive mode. Additionally, the requirements specified in 4.3.2 shall be satisfied. Specimens of ear-muffs shall be conditioned and tested as specified in 5.1.1 and 5.1.2. The scheme of testing shall be as specified in 5.1.3. 4.3.2 Maximum sound pressure levels generated by entertainment audio The sound output levels of the four test samples shall be tested in accordance with 5.2 and reported in the test report. The four test samples shall be tested on 8 test subjects to obtain 16 results measured on 16 ears. The mean value of 16 measurements plus one standard deviation shall not exceed 82 dB(A). In cases where a manufactur
...