Electroacoustics - Audiometric equipment - Part 3: Test signals of short duration (IEC 60645-3:2020)

This part of IEC 60645 specifies a means of describing the physical characteristics, in terms of
electrical waveforms, of audiometric reference and test signals of short duration and methods
for their measurement.
The object of this document is to ensure that audiometric stimuli of short duration are specified
and measured in the same way and that the calibration of equipment using such signals is
carried out using defined methods.
This document does not describe the method of use of short-duration test signals.

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)

L'IEC 60645-3:2020 spécifie un moyen pour décrire les caractéristiques physiques en tant que formes d'ondes électriques, de signaux audiométriques de courte durée de référence et d'essai, ainsi que leurs méthodes de mesure. L'objet du présent document est de s'assurer que les stimuli audiométriques de courte sont spécifiés et mesurés de la même manière et que l'étalonnage des appareils qui utilisent de tels signaux est effectué selon des méthodes définies. Le présent document n'a pas pour objet de décrire la méthode d'utilisation des signaux d'essai de courte durée. L'IEC 60645-3:2020 annule et remplace la deuxième édition parue en 2007. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: a) ajout de nouvelles figures pour les signaux de référence; b) modification de certaines définitions.

Elektroakustika - Avdiometrična oprema - 3. del: Kratkotrajni preskušalni signali (IEC 60645-3:2020)

General Information

Status
Published
Publication Date
01-Dec-2020
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
27-Nov-2020
Due Date
01-Feb-2021
Completion Date
02-Dec-2020

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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
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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 -
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
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SIST EN IEC 60645-3:2021
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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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