SIST EN IEC 60645-3:2021

SLOVENSKI STANDARD
SIST EN IEC 60645-3:2021
01-januar-2021
Nadomešča:
SIST EN 60645-3:2008
Elektroakustika - Avdiometrična oprema - 3. del: Kratkotrajni preskušalni signali
(IEC 60645-3:2020)
Electroacoustics - Audiometric equipment - Part 3: Test signals of short duration (IEC
60645-3:2020)
Akustik - Audiometer - Teil 3: Kurzzeit-Hörprüfsignale (IEC 60645-3:2020)
Electroacoustique - Equipements audiométriques - Partie 3: Signaux d'essai de courte
durée (IEC 60645-3:2020)
Ta slovenski standard je istoveten z: EN IEC 60645-3:2020
ICS:
17.140.50 Elektroakustika Electroacoustics
SIST EN IEC 60645-3:2021 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN IEC 60645-3:2021

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SIST EN IEC 60645-3:2021


EUROPEAN STANDARD EN IEC 60645-3

NORME EUROPÉENNE

EUROPÄISCHE NORM
November 2020
ICS 17.140.50 Supersedes EN 60645-3:2007 and all of its amendments
and corrigenda (if any)
English Version
Electroacoustics - Audiometric equipment - Part 3: Test signals
of short duration
(IEC 60645-3:2020)
Électroacoustique - Appareils audiométriques - Partie 3: Akustik - Audiometer - Teil 3: Kurzzeit-Hörprüfsignale
Signaux d'essai de courte durée (IEC 60645-3:2020)
(IEC 60645-3:2020)
This European Standard was approved by CENELEC on 2020-11-03. CENELEC 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 CENELEC 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 CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.


European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN IEC 60645-3:2020 E

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SIST EN IEC 60645-3:2021
EN IEC 60645-3:2020 (E)
European foreword
The text of document 29/1066/FDIS, future edition 3 of IEC 60645-3, prepared by IEC/TC 29
"Electroacoustics" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
EN IEC 60645-3:2020.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2021-08-03
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2023-11-03
document have to be withdrawn
This document supersedes EN 60645-3:2007 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a mandate given to CENELEC by the European Commission
and the European Free Trade Association.
Endorsement notice
The text of the International Standard IEC 60645-3:2020 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards
indicated:
IEC 61672-1 NOTE Harmonized as EN 61672-1
ISO 8253-2 NOTE Harmonized as EN ISO 8253-2
IEC 60645-1 NOTE Harmonized as EN 60645-1
IEC 60645-6 NOTE Harmonized as EN 60645-6
IEC 60645-7 NOTE Harmonized as EN 60645-7
2

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SIST EN IEC 60645-3:2021
EN IEC 60645-3:2020 (E)
Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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.
NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod),
the relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is
available here: www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60318-1 - Electroacoustics - Simulators of human EN 60318-1 -
head and ear - Part 1: Ear simulator for the
measurement of supra-aural and
circumaural earphones
IEC 60318-3 - Electroacoustics - Simulators of human EN 60318-3 -
head and ear - Part 3: Acoustic coupler for
the calibration of supra-aural earphones
used in audiometry
IEC 60318-4 - Electroacoustics - Simulators of human EN 60318-4 -
head and ear - Part 4: Occluded-ear
simulator for the measurement of
earphones coupled to the ear by means of
ear inserts
IEC 60318-5 - Electroacoustics - Simulators of human EN 60318-5 -
3
head and ear - Part 5: 2 cm coupler for
the measurement of hearing aids and
earphones coupled to the ear by means of
ear inserts
IEC 60318-6 - Electroacoustics - Simulators of human EN 60318-6 -
head and ear - Part 6: Mechanical coupler
for the measurement on bone vibrators
IEC 61260-1 - Electroacoustics - Octave-band and EN 61260-1 -
fractional-octave-band filters - Part 1:
Specifications
ISO 389-6 - Acoustics - Reference zero for the EN ISO 389-6 -
calibration of audiometric equipment - Part
6: Reference threshold of hearing for test
signals of short duration

3

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SIST EN IEC 60645-3:2021




IEC 60645-3

®


Edition 3.0 2020-09




INTERNATIONAL



STANDARD




NORME


INTERNATIONALE
colour

inside










Electroacoustics – Audiometric equipment –

Part 3: Test signals of short duration



Électroacoustique – Appareils audiométriques –

Partie 3: Signaux d'essai de courte durée
















INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE




ICS 17.140.50 ISBN 978-2-8322-8901-3




Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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SIST EN IEC 60645-3:2021
– 2 – IEC 60645-3:2020 © IEC 2020
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Reference signals . 10
4.1 General . 10
4.2 Reference click . 11
4.3 Reference tone-burst . 11
4.4 Reference broadband chirp . 12
4.5 Reference octave-band chirps . 12
5 Calibration and measurement of short-duration signals . 13
BibIiography . 14

Figure 1 – Basic specification of an electrical reference click . 7
Figure 2 – Illustration of the method of measurement of peak-to-peak equivalent signal
levels . 8
Figure 3 – Temporal characteristics of an electrical reference tone-burst . 8
Figure 4 – Time domain specification of the electrical reference click . 11
Figure 5 – Temporal characteristics of the electrical reference broadband chirp. 12

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SIST EN IEC 60645-3:2021
IEC 60645-3:2020 © IEC 2020 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

ELECTROACOUSTICS – AUDIOMETRIC EQUIPMENT –

Part 3: Test signals of short duration


FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment
declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60645-3 has been prepared by IEC technical committee 29:
Electroacoustics.
This third edition cancels and replaces the second edition published in 2007. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) new figures of reference signals;
b) changes in definitions.

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SIST EN IEC 60645-3:2021
– 4 – IEC 60645-3:2020 © IEC 2020
The text of this International Standard is based on the following documents:
FDIS Report on voting
29/1066/FDIS 29/1070/RVD

Full information on the voting for the approval of this document can be found in the report on
voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of IEC 60645 series, under the general title Electroacoustics – Audiometric
equipment, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the document will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this document using a colour printer.

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SIST EN IEC 60645-3:2021
IEC 60645-3:2020 © IEC 2020 – 5 –
INTRODUCTION
Developments in the field of hearing measurements for diagnostic, hearing conservation and
rehabilitation purposes have resulted in the availability of a wide range of audiometric
equipment. In addition, it is possible to consider audiometric equipment in terms of a set of
functional units that can be specified independently. By specifying these functional units, it is
then possible to specify the performance of other audiometric equipment that uses these units.
The IEC 60645 series consists of a number of parts. IEC 60645-3 covers the requirements for
reference and other test signals of short duration.
Examples of test methods, where such signals are commonly used, are the recording of auditory
evoked potentials and evoked otoacoustic emissions. Reference signals are described in order
to provide a basis for calibration and as a recommendation for use when there is no specific
reason to have an alternative signal. Measurement methods for short duration acoustic and
vibratory test signals are described.

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SIST EN IEC 60645-3:2021
– 6 – IEC 60645-3:2020 © IEC 2020
ELECTRO
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