IEC 62760:2016

Audio reproduction method for normalized loudness level

IEC 62760:2016 specifies the audio reproduction method for normalized loudness level of audio sources for consumer equipment and systems.

Méthode de reproduction audio pour niveau d'isosonie normalisé

L'IEC 62760:2016 spécifie la méthode de reproduction audio pour le niveau d'isosonie normalisé des sources audio pour les équipements et systèmes grand public.

General Information

• Status: Published
• Publication Date: 09-Jul-2019
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 33.160.30 - Audio systems
• Technical Committee: TA 20 - Analogue and digital audio
• Drafting Committee: MT 62760 - TC 100/TA 20/MT 62760
• Current Stage: PPUB - Publication issued
• Start Date: 15-Feb-2016
• Completion Date: 10-Feb-2016

Relations

• Amended By: IEC 62760:2016/AMD1:2019 - Amendment 1 - Audio reproduction method for normalized loudness level
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 62760 ®
Edition 1.0 2016-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Audio reproduction method for normalized loudness level

Méthode de reproduction audio pour niveau d'isosonie normalisé

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
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Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
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et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
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The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
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IEC 62760 ®
Edition 1.0 2016-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Audio reproduction method for normalized loudness level

Méthode de reproduction audio pour niveau d'isosonie normalisé

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.160.30 ISBN 978-2-8322-3155-5

– 2 – IEC 62760:2016 © IEC 2016
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references. 6
3 Terms, definitions and abbreviations . 6
3.1 Terms and definitions . 6
3.2 Abbreviations . 7
4 Loudness normalisation . 7
4.1 General . 7
4.2 System model . 7
4.3 Control method . 8
4.3.1 Principal control . 8
4.3.2 Optional control . 8
5 Channel mode . 9
5.1 General . 9
5.2 Input source . 9
5.3 1 channel mode . 10
5.4 2 channel mode . 11
5.5 5.1 multichannel stereophonic . 13
5.6 More than 5.1 channels . 13
6 Loudness level diagram . 14
6.1 General . 14
6.2 Reproduction level . 14
Annex A (informative) Loudness unit . 16
A.1 General . 16
A.2 Loudness quantity and unit . 16
Annex B (informative) Terms related to audio reproduction . 19
Annex C (informative) Loudness metadata . 21
Annex D (informative) Exception to loudness level diagram . 22
Annex E (informative) Example of case 6 . 23
Bibliography . 24

Figure 1 – System model . 8
Figure 2 – Input sources . 10
Figure 3 – 1 channel mode of reproduction . 10
Figure 4 – 2 channel mode of reproduction . 12
Figure 5 – 5.1 channel mode of reproduction . 13
Figure 6 – 22.2 channel mode for reproduction . 14
Figure E.1 – Reproduction level with respect to reference loudness level . 23

Table 1 – Reproduction level . 15
Table A.1 – Loudness quantity and unit . 17
Table D.1 – Reproduction level . 22
Table E.1 – Loudness level of samples . 23

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
AUDIO REPRODUCTION METHOD FOR
NORMALIZED LOUDNESS LEVEL
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 itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
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
...

IEC 62760 ®
Edition 1.1 2019-07
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Audio reproduction method for normalized loudness level

Méthode de reproduction audio pour niveau d'isosonie normalisé

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Central Office Tel.: [phone]
3, rue de Varembé [e-mail]
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform Electropedia - www.electropedia.org
The advanced search enables to find IEC publications by a The world's leading online dictionary on electrotechnology,
variety of criteria (reference number, text, technical containing more than 22 000 terminological entries in English
committee,…). It also gives information on projects, replaced and French, with equivalent terms in 16 additional languages.
and withdrawn publications. Also known as the International Electrotechnical Vocabulary

(IEV) online.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published IEC Glossary - std.iec.ch/glossary
details all new publications released. Available online and 67 000 electrotechnical terminology entries in English and
once a month by email. French extracted from the Terms and Definitions clause of
IEC publications issued since 2002. Some entries have been
IEC Customer Service Centre - webstore.iec.ch/csc collected from earlier publications of IEC TC 37, 77, 86 and
If you wish to give us your feedback on this publication or CISPR.

need further assistance, please contact the Customer Service

Centre: [e-mail].
A propos de l'IEC
La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications IEC
Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la
plus récente, un corrigendum ou amendement peut avoir été publié.

Recherche de publications IEC - Electropedia - www.electropedia.org
webstore.iec.ch/advsearchform Le premier dictionnaire d'électrotechnologie en ligne au
La recherche avancée permet de trouver des publications IEC monde, avec plus de 22 000 articles terminologiques en
en utilisant différents critères (numéro de référence, texte, anglais et en français, ainsi que les termes équivalents dans
comité d’études,…). Elle donne aussi des informations sur les 16 langues additionnelles. Egalement appelé Vocabulaire
projets et les publications remplacées ou retirées. Electrotechnique International (IEV) en ligne.

IEC Just Published - webstore.iec.ch/justpublished Glossaire IEC - std.iec.ch/glossary
Restez informé sur les nouvelles publications IEC. Just 67 000 entrées terminologiques électrotechniques, en anglais
Published détaille les nouvelles publications parues. et en français, extraites des articles Termes et Définitions des
Disponible en ligne et une fois par mois par email. publications IEC parues depuis 2002. Plus certaines entrées
antérieures extraites des publications des CE 37, 77, 86 et
Service Clients - webstore.iec.ch/csc CISPR de l'IEC.

Si vous désirez nous donner des commentaires sur cette
publication ou si vous avez des questions contactez-nous:
[e-mail].
IEC 62760 ®
Edition 1.1 2019-07
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Audio reproduction method for normalized loudness level

Méthode de reproduction audio pour niveau d'isosonie normalisé

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.160.30 ISBN 978-2-8322-7175-9

IEC 62760 ®
Edition 1.1 2019-07
CONSOLIDATED VERSION
REDLINE VERSION
VERSION REDLINE
colour
inside
Audio reproduction method for normalized loudness level

Méthode de reproduction audio pour niveau d'isosonie normalisé

– 2 – IEC 62760:2016+AMD1:2019 CSV
© IEC 2019
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
INTRODUCTION to Amendment 1 . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions and abbreviations . 7
3.1 Terms and definitions . 7
3.2 Abbreviations . 8
4 Loudness normalisation . 8
4.1 General . 8
4.2 System model . 8
4.3 Control method . 9
4.3.1 Principal control . 9
4.3.2 Optional control . 9
5 Channel mode . 10
5.1 General . 10
5.2 Input source . 10
5.3 1 channel mode . 11
5.4 2 channel mode . 12
5.5 5.1 multichannel stereophonic . 14
5.6 More than 5.1 channels . 14
6 Loudness level diagram . 15
6.1 General . 15
6.2 Reproduction level . 15
Annex A (informative) Loudness unit . 17
A.1 General . 17
A.2 Loudness quantity and unit . 17
Annex B (informative) Terms related to audio reproduction . 20
Annex C (informative) Loudness metadata . 22
Annex D (informative) Exception to loudness level diagram . 23
Annex E (informative) Example of case 6 . 24
Bibliography . 25

Figure 1 – System model . 9
Figure 2 – Input sources . 11
Figure 3 – 1 channel mode of reproduction . 11
Figure 4 – 2 channel mode of reproduction . 13
Figure 5 – 5.1 channel mode of reproduction . 14
Figure 6 – 22.2 channel mode for reproduction . 15
Figure E.1 – Reproduction level with respect to reference loudness level. 24

Table 1 – Reproduction level . 16
Table A.1 – Loudness quantity and unit . 18

© IEC 2019
Table D.1 – Reproduction level . 23
Table E.1 – Loudness level of samples . 24

– 4 – IEC 62760:2016+AMD1:2019 CSV
© IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
AUDIO REPRODUCTION METHOD FOR
NORMALIZED LOUDNESS LEVEL
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 itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
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 I
...