EN ISO 4869-3:2007
(Main)Acoustics - Hearing protectors - Part 3: Measurement of insertion loss of ear-muff type protectors using an acoustic test fixture (ISO 4869-3:2007)
Acoustics - Hearing protectors - Part 3: Measurement of insertion loss of ear-muff type protectors using an acoustic test fixture (ISO 4869-3:2007)
ISO 4869-3:2007 specifies a method for measuring the insertion loss of ear-muff type hearing protectors using an acoustic test fixture. The method is applicable to the investigation of production spreads of performance as part of type approval or certification procedures, and to the investigation of the change of performance with age. It is intended to ensure that ear-muff hearing protector samples submitted for subjective testing of attenuation according to ISO 4869-1 have performances typical of the type.
The method specified in ISO 4869-3:2007 is not applicable as the basic test for type approval. Performance data obtained by this method are not intended to be quoted as representing the real-ear sound attenuation of an ear-muff, nor the protection provided by the ear-muff.
Akustik -Gehörschützer - Teil 3: Messung der Schalldämmung von Kapselgehörschützern unter Verwendung einer akustischen Prüfvorrichtung (ISO 4869-3:2007)
Diese Internationale Norm legt ein Verfahren zur Messung der Schalldämmung von Kapselgehörschützern unter Verwendung einer akustischen Prüfvorrichtung fest. Das Verfahren ist anwendbar, um im Rahmen von Bauartzulassungen Produktstreuungen zu ermitteln, alterungsbedingte Veränderungen der Leistung zu untersuchen und sicherzustellen, dass Kapselgehörschützer, die für die subjektive Prüfung der Schall¬dämmung nach ISO 4869-1 vorgelegt werden, die für diesen Typ charakteristische Leistung aufweisen.
Das in dieser Norm der Reihe ISO 4869 festgelegte Verfahren ist nicht als grundlegendes Verfahren für Bauart¬prüfungen anwendbar. Es ist nicht vorgesehen, die mit diesem Verfahren ermittelten Kenndaten weder als die tatsächliche Schalldämmung des Kapselgehörschützers noch als die durch den Kapselgehörschützer bereitgestellte Schutzwirkung anzugeben.
Zum Prüfen bestimmter Kapselgehörschützer, wie zum Beispiel an Arbeitsschutzhelmen befestigten oder solchen mit anatomisch geformten Ohrkapseln oder Ohrkissen oder Kapselgehörschützern, die auf dem Ohr aufliegen, kann eine Änderung des in dieser Norm der Reihe ISO 4869 beschriebenen Verfahrens erforderlich sein.
Acoustique - Protecteurs individuels contre le bruit - Partie 3: Mesurage de l'affaiblissement acoustique des protecteurs du type serre-tête au moyen d'un montage d'essai acoustique (ISO 4869-3:2007)
L'ISO 4869-3:2007 spécifie une méthode de mesurage de l'affaiblissement acoustique des protecteurs individuels contre le bruit du type serre-tête au moyen d'un dispositif d'essai acoustique. Cette méthode peut être employée pour l'examen d'éventuelles différences de performances en cours de fabrication, lors de procédures d'homologation ou de certification, ou pour l'étude de modifications de performances dues au vieillissement. Cette méthode est également destinée à s'assurer que les échantillons de protecteurs individuels contre le bruit du type serre-tête, soumis à l'essai subjectif d'affaiblissement acoustique conformément à l'ISO 4869-1, ont les performances caractéristiques du modèle.
La méthode spécifiée dans l'ISO 4869-3:2007 n'est pas applicable comme méthode d'essai de base pour l'homologation. Les résultats de performances obtenus au moyen de cette méthode ne sont pas censés être cités comme les résultats du mesurage de l'affaiblissement d'un serre-tête sur l'oreille réelle, ni comme la protection obtenue en utilisant un serre-tête.
Akustika - Varovala sluha - 3. del: Merjenje dušenja naušnikov pri uporabi akustične preskusne naprave (ISO 4869-3:2007)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2007
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SIST EN 24869-3:1999
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Acoustics - Hearing protectors - Part 3: Measurement of insertion loss of ear-muff type
protectors using an acoustic test fixture (ISO 4869-3:2007)
Akustik - Gehörschützer - Teil 3: Messung der Schalldämmung von
Kapselgehörschützern unter Verwendung einer akustischen Prüfvorrichtung (ISO 4869-
3:2007)
Acoustique - Protecteurs individuels contre le bruit - Partie 3: Mesurage de
l'affaiblissement acoustique des protecteurs du type serre-tete au moyen d'un montage
d'essai acoustique (ISO 4869-3:2007)
Ta slovenski standard je istoveten z: EN ISO 4869-3:2007
ICS:
13.340.20 Varovalna oprema za glavo Head protective equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN ISO 4869-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2007
ICS 13.340.20 Supersedes EN 24869-3:1993
English Version
Acoustics - Hearing protectors - Part 3: Measurement of
insertion loss of ear-muff type protectors using an acoustic test
fixture (ISO 4869-3:2007)
Acoustique - Protecteurs individuels contre le bruit - Partie Akustik -Gehörschützer - Teil 3: Messung der
3: Mesurage de l'affaiblissement acoustique des Schalldämmung von Kapselgehörschützern unter
protecteurs du type serre-tête au moyen d'un montage Verwendung einer akustischen Prüfvorrichtung (ISO 4869-
d'essai acoustique (ISO 4869-3:2007) 3:2007)
This European Standard was approved by CEN on 30 June 2007.
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 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 Management Centre has the same status as the
official 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 STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2007 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 4869-3:2007: E
worldwide for CEN national Members.
Foreword
This document (EN ISO 4869-3:2007) 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 DS.
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 January 2008, and conflicting national standards
shall be withdrawn at the latest by January 2008.
This document supersedes EN 24869-3:1993.
This document has been prepared under a mandate given to CEN by the European Commission
and the European Free Trade Association, and supports essential requirements of EU Directive(s).
For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this
document.
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,
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.
Endorsement notice
The text of ISO 4869-3:2007 has been approved by CEN as EN ISO 4869-3:2007 without any
modifications.
ANNEX ZA
(informative)
Relationship between this International Standard and the Essential
Requirements of EU Directive 89/686
This European Standard has been prepared under a mandate given to CEN by the European
Commission and the European Free Trade Association to provide a means of conforming to
Essential Requirements of the EU Directive 89/686.
Once this standard is cited in the Official Journal of the European Communities under that Directive
and has been implemented as a national standard in at least one Member State, compliance with
the normative clauses of this standard confers, within the limits of the scope of this standard, a
presumption of conformity with the corresponding Essential Requirements of that Directive and
associated EFTA regulations.
WARNING: Other requirements and other EU Directives may be applicable to the product(s) falling
within the scope of this standard.
INTERNATIONAL ISO
STANDARD 4869-3
First edition
2007-07-01
Acoustics — Hearing protectors —
Part 3:
Measurement of insertion loss of ear-muff
type protectors using an acoustic test
fixture
Acoustique — Protecteurs individuels contre le bruit —
Partie 3: Mesurage de l'affaiblissement acoustique des protecteurs du
type serre-tête au moyen d'un montage d'essai acoustique
Reference number
ISO 4869-3:2007(E)
©
ISO 2007
ISO 4869-3:2007(E)
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ii © ISO 2007 – All rights reserved
ISO 4869-3:2007(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 4869-3 was prepared by Technical Committee ISO/TC 43, Acoustics, Subcommittee SC 1, Noise.
This first edition of ISO 4869-3 cancels and replaces ISO/TR 4869-3:1989, which has been technically revised.
The technical changes are as follows:
a) the title has been changed and the standard has been revised;
b) the content of the former subclause on “test signal” has been included in the subclause “Measuring
system”;
c) the subclause “Measuring system” no longer contains specific requirements concerning the measuring
system;
d) Annex B, dealing with uncertainty, has been added.
ISO 4869 consists of the following parts, under the general title Acoustics — Hearing protectors:
⎯ Part 1: Subjective method for the measurement of sound attenuation
⎯ Part 2: Estimation of effective A-weighted sound pressure levels when hearing protectors are worn
⎯ Part 3: Measurement of insertion loss of ear-muff type protectors using an acoustic test fixture
⎯ Part 4: Measurement of effective sound pressure levels for level-dependent sound-restoration ear-muffs
[Technical Report]
⎯ Part 5: Method for estimation of noise reduction using fitting by inexperienced test subjects [Technical
Specification]
Part 6, Measurement of the active noise reduction of hearing protectors, is under preparation.
ISO 4869-3:2007(E)
Introduction
A Technical Report describing the use of an acoustic test fixture (ATF) to measure the insertion loss of ear-
muff type protectors was published as ISO/TR 4869-3 in 1989. As testing laboratories around the world
commonly use the ATF, it was decided that this Technical Report should be revised and changed into an
International Standard.
Compared to the original Technical Report, the most important aspect of this part of ISO 4869 is the
specification of the ATF. The ATF specified herein is not intended to supplant those dummy heads which
include simulation of various anatomical features and which are used, for example, for development testing
purposes.
The method specified in this part of ISO 4869 does not provide results which are the same as those obtained
by the subjective method, ISO 4869-1.
iv © ISO 2007 – All rights reserved
INTERNATIONAL STANDARD ISO 4869-3:2007(E)
Acoustics — Hearing protectors —
Part 3:
Measurement of insertion loss of ear-muff type protectors using
an acoustic test fixture
1 Scope
This part of ISO 4869 specifies a method for measuring the insertion loss of ear-muff type hearing protectors
using an acoustic test fixture. The method is applicable to the investigation of production spreads of
performance as part of type approval or certification procedures, and to the investigation of the change of
performance with age. It is intended to ensure that ear-muff hearing protector samples submitted for
subjective testing of attenuation according to ISO 4869-1 have performances typical of the type.
The method specified in this part of ISO 4869 is not applicable as the basic test for type approval.
Performance data obtained by this method are not intended to be quoted as representing the real-ear sound
attenuation of an ear-muff, nor the protection provided by the ear-muff.
For the testing of certain ear-muffs (such as those attached to safety helmets, or those with contoured ear-
cups or ear-cushions, or supra-aural ear-muffs), the procedure described in this part of ISO 4869 might need
to be modified.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 48, Rubber, vulcanized or thermoplastic — Determination of hardness (hardness between 10 IRHD and
100 IRHD)
ISO 4869-1, Acoustics — Hearing protectors — Part 1: Subjective method for the measurement of sound
attenuation
ISO/IEC Guide 98:1995, Guide to the expression of uncertainty in measurement (GUM)
IEC 60263, Scales and sizes for plotting frequency characteristics and polar diagrams
IEC 61260, Electroacoustics — Octave-band and fractional-octave-band filters
IEC 61094-4, Measurement microphones — Part 4: Specifications for working standard microphones
ISO 4869-3:2007(E)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
hearing protector
device worn by a person to reduce unwanted auditory effects from acoustic stimuli
3.2
ear-muff
hearing protector consisting of a supra-aural ear-cup to be pressed against each pinna or of a circumaural
ear-cup to be pressed against the head around the pinna
NOTE The ear-cups can be pressed against the head with a special headband or neck-band or by means of a device
attached to a safety helmet or other equipment.
3.3
head-strap
flexible strap fitted to each cup, or to the headband close to the cup
NOTE The strap can be adjusted to support the ear-muffs, usually for behind-the-head types, by resting on the top of
the head.
3.4
acoustic test fixture
ATF
device that approximates certain dimensions of an average adult human head
NOTE An ATF is used for measuring the insertion loss of hearing protectors of the ear-muff type and includes a
microphone for measuring sound pressure levels.
3.5
insertion loss
algebraic difference, in decibels, between the one-third-octave-band sound pressure level measured by the
microphone of the acoustic test fixture with the hearing protector absent and the sound pressure level with the
hearing protector present
3.6
pink noise
noise in which sound power spectral density is inversely proportional to frequency
3.7
acoustic isolation
algebraic difference, in decibel
...
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