EN ISO 4869-1:2018

Acoustics - Hearing protectors - Part 1: Subjective method for the measurement of sound attenuation (ISO 4869-1:2018)

This document specifies a subjective method for measuring sound attenuation of hearing protectors at the threshold of hearing. The method is a laboratory method designed to yield reproducible values under controlled measurement conditions. The values reflect the attenuating characteristics of the hearing protector only to the extent that users wear the device in the same manner as did the test subjects.
For a more representative indication of field performance the methods of ISO/TS 4869‑5 can be used.
This test method yields data which are collected at low sound pressure levels (close to the threshold of hearing) but which are also representative of the attenuation values of hearing protectors at higher sound pressure levels. An exception occurs in the case of amplitude-sensitive hearing protectors for sound pressure levels above the point at which their level-dependent characteristics become effective. At those sound pressure levels the method specified in this document is inapplicable, as it will usually underestimate sound attenuation for these devices.
NOTE       Due to masking from physiological noise in the occluded ear tests, sound attenuations below 500 Hz can be overestimated by a few decibels.

Akustik - Gehörschützer - Teil 1: Subjektives Verfahren zur Messung der Schalldämmung; Deutsche Fassung EN ISO 4869-1:2018 (ISO 4869-1:2018)

Dieses Dokument legt ein subjektives Verfahren zur Messung der Schalldämmung von Gehörschützern an der Hörschwelle fest. Das Verfahren ist ein Laborverfahren, das dafür ausgelegt ist, unter kontrollierten Messbedingungen reproduzierbare Werte zu ergeben. Die Werte reflektieren die Schalldämmeigenschaften des Gehörschützers nur insoweit, als die Benutzer ihn in der gleichen Weise tragen wie die Versuchs¬personen.
Für eine repräsentativere Angabe der Leistung in der Praxis können die Verfahren nach ISO/TS 4869 5 angewendet werden.
Dieses Prüfverfahren liefert Daten, die bei niedrigen Schalldruckpegeln (in der Nähe der Hörschwelle) ermit¬telt werden, die jedoch auch repräsentativ für die Schalldämmwerte der Gehörschützer bei höheren Schall¬druckpegeln sind. Eine Ausnahme bilden amplitudenempfindlicheN1) Gehörschützer für Schalldruckpegel, die oberhalb des Einsatzpunktes ihrer pegelabhängigen Charakteristik liegen. Bei derartigen Schalldruckpegeln ist das im vorliegenden Dokument festgelegte Verfahren nicht anwendbar, weil es üblicherweise zu einer Unter¬schätzung der Schalldämmung dieser Gehörschützer führt.
ANMERKUNG   Aufgrund der in den Versuchen mit aufgesetztem Gehörschützer auftretenden Maskierung durch physiologische Geräusche können Schalldämmungen unterhalb von 500 Hz um einige Dezibel überschätzt werden.

Acoustique - Protecteurs individuels contre le bruit - Partie 1: Méthode subjective de mesurage de l'affaiblissement acoustique (ISO 4869-1:2018)

Le présent document spécifie une méthode subjective de mesurage de l'affaiblissement acoustique apporté par des protecteurs individuels contre le bruit au seuil d'audition. Il s'agit d'une méthode de laboratoire conçue pour obtenir des valeurs reproductibles dans des conditions de mesurage contrôlées. Ces valeurs ne reflètent les caractéristiques d'affaiblissement du protecteur individuel contre le bruit que dans la mesure où les utilisateurs le portent de la même façon que les sujets lors des essais.
Pour une indication plus représentative de la performance in situ, les méthodes de l'ISO/TS 4869‑5 peuvent être utilisées.
Avec la méthode d'essai décrite, les données sont obtenues à des niveaux de pression acoustique bas (proches du seuil d'audition), mais sont également représentatives des valeurs de l'affaiblissement apporté par les protecteurs individuels contre le bruit à des niveaux de pression acoustique plus élevés, sauf, dans le cas des protecteurs individuels contre le bruit à atténuation dépendante du niveau, lorsque les niveaux de pression acoustique sont supérieurs au seuil au-delà duquel la dépendance du niveau devient effective. À ces niveaux de pression acoustique, la méthode spécifiée par le présent document devient inapplicable car elle conduit habituellement à une sous-estimation de l'affaiblissement apporté par ces dispositifs.
NOTE       En raison de l'effet de masque dû au bruit physiologique lors des essais oreilles occluses, les affaiblissements acoustique au-dessous de 500 Hz peuvent être surestimés de quelques décibels.

Akustika - Oprema za varovanje sluha - 1. del: Subjektivna metoda za merjenje dušenja zvoka (ISO 4869-1:2018)

Ta dokument določa subjektivno metodo za merjenje dušenja zvoka pri opremi za varovanje sluha pri pragu slišnosti. Metoda je laboratorijska metoda, katere namen je doseči ponovljive vrednosti pod nadzorovanimi pogoji merjenja. Vrednosti odražajo lastnosti dušenja opreme za varovanje sluha samo v obsegu, v katerem uporabniki opremo uporabljajo na enak način kot osebe, ki so sodelovale pri preskušanju.
Za bolj reprezentativen kazalnik terenske zmogljivosti je mogoče uporabiti metode iz standarda ISO/TS 4869-5. Rezultat te metode so podatki, ki so zbrani pri nizkih ravneh zvočnega tlaka (blizu praga slišnosti), vendar so reprezentativni tudi za vrednosti dušenja opreme za varovanje sluha pri višjih ravneh zvočnega tlaka. Izjema se pojavi pri opremi za varovanje sluha, občutljivi na spremembe amplitude, in sicer za ravni zvočnega tlaka nad točko, pri kateri njene lastnosti, odvisne od ravni, začnejo učinkovati.
Pri teh ravneh zvočnega tlaka se metoda, opredeljena v tem dokumentu, ne uporablja, saj običajno podceni dušenje zvoka te opreme.
OPOMBA: Zaradi maskiranja fiziološkega šuma pri preskusih s pokritimi ušesi se lahko dušenje zvoka pod 500 Hz preceni za nekaj decibelov.

General Information

• Status: Published
• Publication Date: 20-Nov-2018
• Withdrawal Date: 30-May-2019
• ICS: 13.340.20 - Head protective equipment
• Technical Committee: CEN/TC 211 - Acuostics
• Drafting Committee: CEN/TC 211 - Acuostics
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 21-Nov-2018
• Completion Date: 21-Nov-2018
• Directive: 2016/425 - Regulation (EU) 2016/425 of the European Parliament and of the Council of 9 March 2016 on personal protective equipment and repealing Council Directive 89/686/EEC
• Directive: 89/686/EEC - Council Directive 89/686/EEC of 21 December 1989 on the approximation of the laws of the Member States relating to personal protective equipment
• Mandate: M/031 - Standardization mandate to CEN/CENELEC concerning standards for Personal Protective Equipment
• Mandate: M/BC/CEN/90/2 - Order for standardization concerning Personal Protective Equipment (P.P.E.)
• Ref Project: SIST EN ISO 4869-1:2019 - Acoustics - Hearing protectors - Part 1: Subjective method for the measurement of sound attenuation (ISO 4869-1:2018)

Relations

• Replaces: EN 24869-1:1992 - Acoustics - Hearing protectors - Subjective method for the measurement of sound attenuation (ISO 4869-1:1990)
• Effective Date: 28-Nov-2018

Standards Content (Sample)

SLOVENSKI STANDARD
01-januar-2019
1DGRPHãþD
SIST EN 24869-1:1999
Akustika - Oprema za varovanje sluha - 1. del: Subjektivna metoda za merjenje
dušenja zvoka (ISO 4869-1:2018)
Acoustics - Hearing protectors - Part 1: Subjective method for the measurement of sound
attenuation (ISO 4869-1:2018)
Akustik - Gehörschützer - Teil 1: Subjektive Methode zur Messung der Schalldämmung
(ISO 4869-1:2018)
Acoustique - Protecteurs individuels contre le bruit - Partie 1: Méthode subjective de
mesurage de l'affaiblissement acoustique (ISO 4869-1:2018)
Ta slovenski standard je istoveten z: EN ISO 4869-1:2018
ICS:
13.340.20 Varovalna oprema za glavo Head protective equipment
17.140.01 $NXVWLþQDPHUMHQMDLQ Acoustic measurements and
EODåHQMHKUXSDQDVSORãQR noise abatement in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 4869-1
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2018
EUROPÄISCHE NORM
ICS 13.340.20 Supersedes EN 24869-1:1992
English Version
Acoustics - Hearing protectors - Part 1: Subjective method
for the measurement of sound attenuation (ISO 4869-
1:2018)
Acoustique - Protecteurs individuels contre le bruit - Akustik - Gehörschützer - Teil 1: Subjektive Methode
Partie 1: Méthode subjective de mesurage de zur Messung der Schalldämmung (ISO 4869-1:2018)
l'affaiblissement acoustique (ISO 4869-1:2018)
This European Standard was approved by CEN on 23 April 2018.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for 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 or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

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.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 4869-1:2018 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 4869-1:2018) has been prepared by Technical Committee ISO/TC 43
"Acoustics" in collaboration with Technical Committee CEN/TC 211 “Acoustics” the secretariat of which
is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by May 2019, and conflicting national standards shall be
withdrawn at the latest by May 2019.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 24869-1:1992.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: 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 the United Kingdom.
Endorsement notice
The text of ISO 4869-1:2018 has been approved by CEN as EN ISO 4869-1:2018 without any
modification.
INTERNATIONAL ISO
STANDARD 4869-1
Second edition
2018-10
Acoustics — Hearing protectors —
Part 1:
Subjective method for the
measurement of sound attenuation
Acoustique — Protecteurs individuels contre le bruit —
Partie 1: Méthode subjective de mesurage de l'affaiblissement
acoustique
Reference number
ISO 4869-1:2018(E)
©
ISO 2018
ISO 4869-1:2018(E)
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved

ISO 4869-1:2018(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Measurement of the sound attenuation of hearing protectors . 3
4.1 Test signals . 3
4.2 Test site . 3
4.2.1 General. 3
4.2.2 Sound pressure level and sound pressure level variation . 3
4.2.3 Reverberation time . 4
4.2.4 Ambient noise level . 4
4.3 Test equipment . 5
4.4 Test subjects . 6
4.5 General test procedure and instruction of the test subject . 6
4.6 Determination of hearing protector attenuation . 7
5 Application force . 8
5.1 Earmuffs. 8
5.2 Semi-aural earplugs . 8
6 Test report . 8
Annex A (normative) Uncertainty of hearing protector attenuation measurements .10
Annex B (informative) Evaluation of two hearing protector attenuation measurements .14
Annex C (informative) Minimum and maximum sound pressure levels for test signals .17
Bibliography .18
ISO 4869-1:2018(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following
URL: www .iso .org/iso/foreword .html.
This document was prepared by Technical Committee ISO/TC 43, Acoustics, Subcommittee SC 1, Noise.
This second edition cancels and replaces the first edition (ISO 4869-1:1990), which has been technically
revised.
The main changes compared to the previous edition are as follows:
The revision includes changes mainly of the sound field requirements, specification of test equipment,
test procedures and instructions to the test subjects, and uncertainty of the measurements. The sound
field requirements are based on published and unpublished laboratory experience, especially [10] and
[11] in the Bibliography.
A list of all parts in the ISO 4869 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/members .html.
iv © ISO 2018 – All rights reserved

ISO 4869-1:2018(E)
Introduction
Hearing protectors are commonly used to reduce the noise to which the ear is exposed. Hearing
protectors are manufactured as earplugs, earmuffs or helmets. A standardized method of sound
attenuation measurement allows comparison of performance data obtained in different locations under
similar conditions.
INTERNATIONAL STANDARD ISO 4869-1:2018(E)
Acoustics — Hearing protectors —
Part 1:
Subjective method for the measurement of sound
attenuation
1 Scope
This document specifies a subjective method for measuring sound attenuation of hearing protectors
at the threshold of hearing. The method is a laboratory method designed to yield reproducible values
under controlled measurement conditions. The values r
...