IEC 63296-3:2025
(Main)Portable multimedia equipment - Determination of battery duration - Part 3: Wearable powered loudspeaker equipment
Portable multimedia equipment - Determination of battery duration - Part 3: Wearable powered loudspeaker equipment
IEC 63296-3:2025 specifies the method for measuring the battery duration at a defined sound pressure level for continuous music playback of battery-operated wearable powered loudspeaker equipment. A primary battery or secondary battery can be used as a power source for such a shoulder-carried or body-worn loudspeaker and its composite device. In addition, only equipment that can be placed on or hung from a head and torso simulator (HATS) is covered. Bone conduction speakers are excluded. Portable loudspeaker equipment also supporting video playback as the main function is not covered by this document.
Matériel multimédia portable - Détermination de la durée des batteries - Partie 3: Haut-parleurs portables alimentés par batteries
IEC 63296-3:2025 spécifie la méthode de mesure de la durée des batteries à un niveau de pression acoustique défini pour la lecture continue de fichiers musicaux par des haut-parleurs portables alimentés par batteries. Une pile ou une batterie d'accumulateurs peut être utilisée comme source d'énergie pour un tel haut-parleur porté sur l'épaule ou sur le corps et son dispositif d'interconnexion. De plus, seul le matériel qui peut être placé sur ou suspendu à un simulateur de tête et de torse (HATS - head and torso simulator en anglais) est couvert. Les haut-parleurs à conduction osseuse sont exclus. Les haut-parleurs portables dont la fonction principale est la lecture vidéo ne sont pas couverts par le présent document.
General Information
Standards Content (Sample)
IEC 63296-3 ®
Edition 1.0 2025-10
INTERNATIONAL
STANDARD
Portable multimedia equipment - Determination of battery duration -
Part 3: Wearable powered loudspeaker equipment
ICS 33.160.60; 27.015 ISBN 978-2-8327-0776-0
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.
IEC Secretariat Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
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 - IEC Products & Services Portal - products.iec.ch
webstore.iec.ch/advsearchform Discover our powerful search engine and read freely all the
The advanced search enables to find IEC publications by a
publications previews, graphical symbols and the glossary.
variety of criteria (reference number, text, technical With a subscription you will always have access to up to date
committee, …). It also gives information on projects, content tailored to your needs.
replaced and withdrawn publications.
Electropedia - www.electropedia.org
IEC Just Published - webstore.iec.ch/justpublished The world's leading online dictionary on electrotechnology,
Stay up to date on all new IEC publications. Just Published containing more than 22 500 terminological entries in English
details all new publications released. Available online and and French, with equivalent terms in 25 additional languages.
once a month by email. Also known as the International Electrotechnical Vocabulary
(IEV) online.
IEC Customer Service Centre - webstore.iec.ch/csc
If you wish to give us your feedback on this publication or
need further assistance, please contact the Customer
Service Centre: sales@iec.ch.
CONTENTS
FOREWORD . 2
INTRODUCTION . 4
1 Scope . 5
2 Normative references . 5
3 Terms, definitions and abbreviated terms . 5
3.1 Terms and definitions . 5
3.2 Abbreviated terms. 7
4 Measurement conditions . 7
4.1 General . 7
4.2 Environmental conditions . 7
4.3 Acoustical environment . 8
4.4 Input signal . 8
4.4.1 Test signal . 8
4.4.2 Radio broadcast test signal . 8
4.4.3 Other digital equipment . 8
4.5 Reproduced sound pressure level . 8
4.6 Background noise . 8
4.7 Measurement accuracy . 8
4.8 Battery . 8
4.9 HATS, pinna simulator, ear simulator . 9
4.10 1/3 octave-band analyser . 9
4.11 Voltmeter . 9
4.12 A-characteristic filter . 9
4.13 Free-field compensating filter . 9
5 Measurement method . 9
5.1 General . 9
5.2 Set up of EUT on HATS . 11
5.3 Operating condition . 11
5.3.1 Input condition . 11
5.3.2 Output condition . 11
5.4 Adjustment of controls . 11
5.5 Measurement of battery duration . 11
5.6 Characteristics to be specified . 11
Annex A (informative) Example of characteristics to be specified . 12
A.1 General . 12
A.2 Example 1 of battery duration . 12
A.3 Example 2 of battery duration . 12
Bibliography . 13
Figure 1 – Connection diagram of equipment [SOURCE: Figure 2 of JEITA CP-2907] . 10
Figure 2 – Order of measurement . 10
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Portable multimedia equipment -
Determination of battery duration -
Part 3: Wearable powered loudspeaker equipment
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 for the correct application of this publication.
9) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
may be required to implement this document. However, implementers are cautioned that this may not represent
the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
IEC 63296-3 has been prepared by technical area 19: Environmental and energy aspects for
multimedia systems and equipment, of IEC technical committee 100: Audio, video and
multimedia systems and equipment. It is an International Standard.
Japan Electronics and Information Technology Industries Association (JEITA): CP-2907
'Methods of Measurement for Battery Duration on Wearable Speaker Equipment' has served as
a basis for the development of this document.
The text of this International Standard is based on the following documents:
Draft Report on voting
100/4260/CDV 100/4358/RVC
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
A list of all parts in the IEC 63296 series, published under the general title Portable multimedia
equipment – Determination of battery duration, can be found on the IEC website.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
– reconfirmed,
– withdrawn, or
– revised.
INTRODUCTION
This document specifies a method of measurement for battery duration of wearable powered
loudspeaker equipment. Wearable powered loudspeaker equipment is assumed to be a
personal device such as a shoulder-carried powered speaker which is worn near the ear or on
the body and its composite device.
This document was developed based on the following specification of the Japan Electronics
and Information Technology Industries Association (JEITA): CP-2907 'Methods of Measurement
for Battery Duration on Wearable Speaker Equipment'.
The IEC 63296 series on 'Portable multimedia equipment – Determination of battery duration'
currently consists of the following:
– IEC 63296-1: Powered loudspeaker equipment
– IEC 63296-2: Headphones and earphones with active noise-cancelling functions
– IEC 63296-3: Wearable powered loudspeaker equipment.
1 Scope
This document specifies the
...
IEC 63296-3 ®
Edition 1.0 2025-10
NORME
INTERNATIONALE
Matériel multimédia portable - Détermination de la durée des batteries -
Partie 3: Haut-parleurs portables alimentés par batteries
ICS 33.160.60; 27.015 ISBN 978-2-8327-0776-0
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 Secretariat Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
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 - IEC Products & Services Portal - products.iec.ch
webstore.iec.ch/advsearchform Découvrez notre puissant moteur de recherche et consultez
La recherche avancée permet de trouver des publications gratuitement tous les aperçus des publications, symboles
IEC en utilisant différents critères (numéro de référence, graphiques et le glossaire. Avec un abonnement, vous aurez
texte, comité d’études, …). Elle donne aussi des toujours accès à un contenu à jour adapté à vos besoins.
informations sur les projets et les publications remplacées
ou retirées. Electropedia - www.electropedia.org
Le premier dictionnaire d'électrotechnologie en ligne au
IEC Just Published - webstore.iec.ch/justpublished monde, avec plus de 22 500 articles terminologiques en
Restez informé sur les nouvelles publications IEC. Just anglais et en français, ainsi que les termes équivalents
Published détaille les nouvelles publications parues. dans 25 langues additionnelles. Egalement appelé
Disponible en ligne et une fois par mois par email. Vocabulaire Electrotechnique International (IEV) en ligne.
Service Clients - webstore.iec.ch/csc
Si vous désirez nous donner des commentaires sur cette
publication ou si vous avez des questions contactez-
nous: sales@iec.ch.
SOMMAIRE
AVANT-PROPOS . 2
INTRODUCTION . 4
1 Domaine d'application . 5
2 Références normatives . 5
3 Termes, définitions et termes abrégés . 5
3.1 Termes et définitions. 5
3.2 Termes abrégés . 7
4 Conditions de mesure . 7
4.1 Généralités . 7
4.2 Conditions d'environnement . 8
4.3 Environnement acoustique . 8
4.4 Signal d'entrée . 8
4.4.1 Signal d'essai . 8
4.4.2 Signal d'essai de radiodiffusion . 8
4.4.3 Autres matériels numériques . 8
4.5 Niveau de pression acoustique restitué . 8
4.6 Bruit de fond . 8
4.7 Exactitude des mesurages . 8
4.8 Batterie . 9
4.9 HATS, simulateur de pavillon, simulateur d'oreille . 9
4.10 Analyseur de bande de tiers d'octave. 9
4.11 Voltmètre . 9
4.12 Filtre à caractéristique A. 9
4.13 Filtre de compensation en champ libre . 9
5 Méthode de mesure . 9
5.1 Généralités . 9
5.2 Configuration de l'EUT sur HATS . 11
5.3 Condition de fonctionnement . 11
5.3.1 Condition d'entrée . 11
5.3.2 Condition de sortie . 11
5.4 Réglage des commandes . 11
5.5 Mesurage de la durée de la batterie. 11
5.6 Caractéristiques à spécifier . 11
Annexe A (informative) Exemple de caractéristiques à spécifier . 12
A.1 Généralités . 12
A.2 Exemple 1 de durée de la batterie . 12
A.3 Exemple 2 de durée de la batterie . 12
Bibliographie . 13
Figure 1 — Schéma de connexion du matériel [SOURCE: Figure 2 de JEITA CP-2907] . 10
Figure 2 — Ordre des mesurages. 10
COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
____________
Matériel multimédia portable -
Détermination de la durée des batteries -
Partie 3: Haut-parleurs portables alimentés par batteries
AVANT-PROPOS
1) La Commission Électrotechnique Internationale (IEC) est une organisation mondiale de normalisation composée
de l'ensemble des comités électrotechniques nationaux (Comités nationaux de l'IEC). L'IEC a pour objet de
favoriser la coopération internationale pour toutes les questions de normalisation dans les domaines de
l'électricité et de l'électronique. À cet effet, l'IEC – entre autres activités – publie des Normes internationales,
des Spécifications techniques, des Rapports techniques, des Spécifications accessibles au public (PAS) et des
Guides (ci-après dénommés "Publication(s) de l'IEC"). Leur élaboration est confiée à des comités d'études, aux
travaux desquels tout Comité national intéressé par le sujet traité peut participer. Les organisations
internationales, gouvernementales et non gouvernementales, en liaison avec l'IEC, participent également aux
travaux. L'IEC collabore étroitement avec l'Organisation Internationale de Normalisation (ISO), selon des
conditions fixées par accord entre les deux organisations.
2) Les décisions ou accords officiels de l'IEC concernant les questions techniques représentent, dans la mesure du
possible, un accord international sur les sujets étudiés, étant donné que les Comités nationaux de l'IEC intéressés
sont représentés dans chaque comité d'études.
3) Les Publications de l'IEC se présentent sous la forme de recommandations internationales et sont agréées
comme telles par les Comités nationaux de l'IEC. Tous les efforts raisonnables sont entrepris afin que l'IEC
s'assure de l'exactitude du contenu technique de ses publications; l'IEC ne peut pas être tenue responsable de
l'éventuelle mauvaise utilisation ou interprétation qui en est faite par un quelconque utilisateur final.
4) Dans le but d'encourager l'uniformité internationale, les Comités nationaux de l'IEC s'engagent, dans toute la
mesure possible, à appliquer de façon transparente les Publications de l'IEC dans leurs publications nationales
et régionales. Toutes divergences entre toutes Publications de l'IEC et toutes publications nationales ou
régionales correspondantes doivent être indiquées en termes clairs dans ces dernières.
5) L'IEC elle-même ne fournit aucune attestation de conformité. Des organismes de certification indépendants
fournissent des services d'évaluation de conformité et, dans certains secteurs, accèdent aux marques de
conformité de l'IEC. L'IEC n'est responsable d'aucun des services effectués par les organismes de certification
indépendants.
6) Tous les utilisateurs doivent s'assurer qu'ils sont en possession de la dernière édition de cette publication.
7) Aucune responsabilité ne doit être imputée à l'IEC, à ses administrateurs, employés, auxiliaires ou mandataires,
y compris ses experts particuliers et les membres de ses comités d'études et des Comités nationaux de l'IEC,
pour tout préjudice causé en cas de dommages corporels et matériels, ou de tout autre dommage de quelque
nature que ce soit, directe ou indirecte, ou pour supporter les coûts (y compris les frais de justice) et les dépenses
découlant de la publication ou de l'utilisation de cette Publication de l'IEC ou de toute autre Publication de l'IEC,
ou au crédit qui lui est accordé.
8) L'attention est attirée sur les références normatives citées dans cette publication. L'utilisation de publications
référencées est obligatoire pour une application correcte de la présente publication.
9) L'IEC attire l'attention sur le fait que la mise en application du présent document peut entraîner l'utilisation d'un
ou de plusieurs brevets. L'IEC ne prend pas position quant à la preuve, à la validité et à l'applicabilité de tout
droit de brevet revendiqué à cet égard. À la date de publication du présent document, l'IEC n'avait pas reçu
notification qu'un brevet pouvait être nécessaire à sa mise en application. Toutefois, il y a lieu d'avertir les
responsables de la mise en application du présent document que des informations plus récentes sont
susceptibles de figurer dans la base de données de brevets, disponible à l'adresse https://patents.iec.ch. L'IEC
ne saurait être tenue pour responsable de ne pas avoir identifié de tels droits de brevets.
L'IEC 63296-3 a été établie par le domaine technique 19: Aspects environnementaux et
énergétiques des systèmes et équipements multimédias, du comité d'études 100 de l'IEC:
Systèmes et équipements audio, vidéo et services de données. Il s'agit d'une Norme
internationale.
Japan Electronics and Information Technology Industries Association (JEITA): CP-2907
'Methods of Measurement for Battery Duration on Wearable Speaker Equipment' a servi de
base pour l’élaboration du présent document.
Le texte de cette Norme internationale est issu des documents suivants:
Projet Rapport de vote
100/4260/CDV 100/4358/RVC
Le rapport de vote indiqué dans le tableau ci-dessus donne toute information sur le vote ayant
abouti à son approbation.
La langue employée pour l'élaboration de cette Norme internationale est l'anglais.
Une liste de toutes les parties de la série IEC 63296, publiées sous le titre général Matériel
multimédia portable - Détermination de la durée des batteries, se trouve sur le site web de l'IEC
Ce document a été rédigé selon les Directives ISO/IEC, Partie 2, il a été développé selon les
Directives ISO/IEC, Partie 1 et les Directives ISO/IEC, Supplément IEC, disponibles sous
www.iec.ch/members_experts/refdocs. Les principaux types de documents développés par
l'IEC sont décrits plus en détail sous www.iec.ch/publications.
Le comité a décidé que le contenu de ce document ne sera pas modifié avant la date de stabilité
indiquée sur le site web de l'IEC sous webstore.iec.ch dans les données relatives au document
recherché. À cette date, le document sera
– reconduit,
– supprimé, ou
– révisé.
INTRODUCTION
Le présent document spécifie la méthode de mesure de la durée des batteries qui équipent les
haut-parleurs portables alimentés par batteries. Par hypothèse, le haut-parleur portable
alimenté par batterie est constitué d'un dispositif personnel, tel qu'un haut-parleur alimenté
porté sur l'épaule près de l'oreille ou sur le corps et de son dispositif d'interconnexion.
Le présent document a été élaboré sur la base de la spécification correspondante de la
Japanese industry association specification JEITA CP-2907 "Methods of Measurement for
Battery Duration on Wearable Speaker Equipment".
La série IEC 63296 relative aux "Matériel multimédia portable - Détermination de la durée des
batteries" se compose actuellement des parties suivantes:
– IEC 63296-1: Haut-parleurs alimentés par batteries
– IEC 63296-2: Casques et écouteurs avec fonctions de réduction de bruit active
– IEC 63296-3: Haut-parleurs portables alimentés par batteries
1 Domaine d'application
Le présent document spécifie la méthode de mesure de la durée des batteries à un niveau de
pression acoustique défini pour la lecture continue de fichiers musicaux par des haut-parleurs
portables alimentés par batteries. Une pile ou une batterie d'accumulateurs peut être utilisée
comme source d'énergie pour un tel haut-parleur porté sur l'épaule ou sur le corps et son
dispositif d'interconnexion. De plus, seul le matériel qui peut être placé sur ou suspendu à un
simulateur de tête et de torse (HATS - head and torso simulator en anglais) est couvert. Les
haut-parleurs à conduction osseuse sont exclus. Les haut-parleurs portables dont la fonction
principale est la lecture vidéo ne sont pas couverts par
...
IEC 63296-3 ®
Edition 1.0 2025-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Portable multimedia equipment - Determination of battery duration -
Part 3: Wearable powered loudspeaker equipment
Matériel multimédia portable - Détermination de la durée des batteries -
Partie 3: Haut-parleurs portables alimentés par batteries
ICS 33.160.60, 27.015 ISBN 978-2-8327-0776-0
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 Secretariat Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
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 - IEC Products & Services Portal - products.iec.ch
webstore.iec.ch/advsearchform Discover our powerful search engine and read freely all the
The advanced search enables to find IEC publications by a publications previews, graphical symbols and the glossary.
variety of criteria (reference number, text, technical With a subscription you will always have access to up to date
committee, …). It also gives information on projects, content tailored to your needs.
replaced and withdrawn publications.
Electropedia - www.electropedia.org
IEC Just Published - webstore.iec.ch/justpublished The world's leading online dictionary on electrotechnology,
Stay up to date on all new IEC publications. Just Published containing more than 22 500 terminological entries in English
details all new publications released. Available online and and French, with equivalent terms in 25 additional languages.
once a month by email. Also known as the International Electrotechnical Vocabulary
(IEV) online.
IEC Customer Service Centre - webstore.iec.ch/csc
If you wish to give us your feedback on this publication or
need further assistance, please contact the Customer
Service Centre: sales@iec.ch.
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 - IEC Products & Services Portal - products.iec.ch
webstore.iec.ch/advsearchform Découvrez notre puissant moteur de recherche et consultez
La recherche avancée permet de trouver des publications gratuitement tous les aperçus des publications, symboles
IEC en utilisant différents critères (numéro de référence, graphiques et le glossaire. Avec un abonnement, vous aurez
texte, comité d’études, …). Elle donne aussi des toujours accès à un contenu à jour adapté à vos besoins.
informations sur les projets et les publications remplacées
ou retirées. Electropedia - www.electropedia.org
Le premier dictionnaire d'électrotechnologie en ligne au
IEC Just Published - webstore.iec.ch/justpublished monde, avec plus de 22 500 articles terminologiques en
Restez informé sur les nouvelles publications IEC. Just anglais et en français, ainsi que les termes équivalents
Published détaille les nouvelles publications parues. dans 25 langues additionnelles. Egalement appelé
Disponible en ligne et une fois par mois par email. Vocabulaire Electrotechnique International (IEV) en ligne.
Service Clients - webstore.iec.ch/csc
Si vous désirez nous donner des commentaires sur cette
publication ou si vous avez des questions contactez-
nous: sales@iec.ch.
CONTENTS
FOREWORD . 2
INTRODUCTION . 4
1 Scope . 5
2 Normative references . 5
3 Terms, definitions and abbreviated terms . 5
3.1 Terms and definitions . 5
3.2 Abbreviated terms. 7
4 Measurement conditions . 7
4.1 General . 7
4.2 Environmental conditions . 7
4.3 Acoustical environment . 8
4.4 Input signal . 8
4.4.1 Test signal . 8
4.4.2 Radio broadcast test signal . 8
4.4.3 Other digital equipment . 8
4.5 Reproduced sound pressure level . 8
4.6 Background noise . 8
4.7 Measurement accuracy . 8
4.8 Battery . 8
4.9 HATS, pinna simulator, ear simulator . 9
4.10 1/3 octave-band analyser . 9
4.11 Voltmeter . 9
4.12 A-characteristic filter . 9
4.13 Free-field compensating filter . 9
5 Measurement method . 9
5.1 General . 9
5.2 Set up of EUT on HATS . 11
5.3 Operating condition . 11
5.3.1 Input condition . 11
5.3.2 Output condition . 11
5.4 Adjustment of controls . 11
5.5 Measurement of battery duration . 11
5.6 Characteristics to be specified . 11
Annex A (informative) Example of characteristics to be specified . 12
A.1 General . 12
A.2 Example 1 of battery duration . 12
A.3 Example 2 of battery duration . 12
Bibliography . 13
Figure 1 – Connection diagram of equipment [SOURCE: Figure 2 of JEITA CP-2907] . 10
Figure 2 – Order of measurement . 10
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Portable multimedia equipment -
Determination of battery duration -
Part 3: Wearable powered loudspeaker equipment
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 for the correct application of this publication.
9) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
may be required to implement this document. However, implementers are cautioned that this may not represent
the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
IEC 63296-3 has been prepared by technical area 19: Environmental and energy aspects for
multimedia systems and equipment, of IEC technical committee 100: Audio, video and
multimedia systems and equipment. It is an International Standard.
Japan Electronics and Information Technology Industries Association (JEITA): CP-2907
'Methods of Measurement for Battery Duration on Wearable Speaker Equipment' has served as
a basis for the development of this document.
The text of this International Standard is based on the following documents:
Draft Report on voting
100/4260/CDV 100/4358/RVC
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
A list of all parts in the IEC 63296 series, published under the general title Portable multimedia
equipment – Determination of battery duration, can be found on the IEC website.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
– reconfirmed,
– withdrawn, or
– revised.
INTRODUCTION
This document specifies a method of measurement for battery duration of wearable powered
loudspeaker equipment. Wearable powered loudspeaker equipment is assumed to be a
personal device such as a shoulder-carried powered speaker which is worn near the ear or on
the body and its composite device.
This document was developed based on the following specification of the Japan Electronics
and Information Technology Industries Association (JEITA): CP-2907 'Methods of Measurement
for Battery Duration on Wearable Speaker Equipment'.
The IEC 63296 series on 'Portable multimedia equipment – Determination of battery duration'
currently consists of the following:
– IEC 63296-1: Powered loudspeaker equipment
– IEC 63296-2: Headphones and earphones with active noise-cancelling functions
– IEC 63296-3: Wearable powered loudspeaker equipment.
1 Scope
This document specifies the method for measuring the battery duration at a defined sound
pressure level for continuous music playback of battery-operated wearable powered
loudspeaker equipment. A primary battery or secondary battery can be used as a power source
for such a shoulder-carried or body-worn loudspeaker and its composite device. In addition,
only equipment that can be placed on or hung from a head and torso simulator (HATS) is
covered. Bone conduction speakers are excluded. Portable loudspeaker equipment also
supporting video playback as the main function is not covered by this document.
2 Normative references
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.
IEC 60268-1, Sound system equipment - Part 1: General
IEC 60268-2, Sound system equipment - Part 2: Explanation of general terms and calculation
methods
IEC 60268-5:2003, Sound system equipment - Part 5: Loudspeakers
IEC 60268-5:2003/AMD1:2007
IEC 60268-7, Sound system equipment - Part 7: Headphones and earphones
IEC 60318-4, Electroacoustics - Simulators of human head and ear - Part 4: Occluded-ear
simulator for the measurement of earphones coupled to the ear by means of ear inserts
IEC 60318-7, Electroacoustics - Simulators of human head and ear - Part 7: Head and torso
simulator for the measurement of sound sources close to the ear
IEC 61260-1, Electroacoustics - Octave-band and fractional-octave-band filters - Part 1:
Specifications
IEC 61672-1, Electroacoustics - Sound level meters - Part 1: Specifications
IEC 61938, Multimedia systems - Guide to the recommended characteristics of analogue
interfaces to achieve interoperability
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60268-2 and the
following apply.
ISO and IEC maintain terminology databases for use in standardization at the following
addresses:
– IEC Electropedia: available at https://www.electropedia.org/
– ISO Online browsing platform: available at https://www.iso.org/obp
3.1.1
amplifier
device for increasing the power of a signal
[SOURCE: IEC 60050-151:2001, 151-13-50]
3.1.2
battery
power storage equipment that is capable of powering equipment such that the equipment can
provide its intended functions
3.1.3
battery duration
time during which the equipment can provide its primary function using its built-in power source
3.1.4
bone conduction speaker
earphones or loudspeaker that transmits sound by vibrating cartilage, bones, etc. instead of
transmitting sound vibrations directly to the eardrum
3.1.5
EUT
equipment under test
equipment to be measured using the methods described in this document
Note 1 to entry: Other terminology used is device under test (DUT) or unit under test (UUT).
3.1.6
free-field condition
environment in which the sound pressure decreases with the distance from a point source
EXAMPLE anechoic room
3.1.7
input terminal
terminal for audio signal input
[SOURCE: IEC 63296-2:2023, 3.7]
3.1.8
powered loudspeaker
loudspeaker system with built-in amplifier
3.1.9
neckband speaker
powered loudspeaker that can be worn around the neck or placed on the shoulder
3.1.10
primary function
function providing a main intended purpose
EXAMPLE Cleaning of clothes by a washing machine, displaying of video and providing sound by a television.
Note 1 to entry: Products can have more than one primary function.
3.1.11
radio receiver
device with associated antenna or including an antenna, used to
select the desired radio-frequency signals from the incident radio-frequency radiation, to amplify
them, demodulate them and if necessary convert the recovered signals into a directly usable
form such as sounds or pictures
[SOURCE: IEC 60050-713:1998, 713-10-02, modified – List item one of definition deleted.]
3.1.12
reproduced sound pressure level
sound pressure level measured by the octave-band analyser when the EUT is attached to the
HATS and the simulated program signal is input, corrected by the free sound field correction
filter and the A-weighting filter
3.1.13
wearable powered loudspeaker
device that is worn near the ear or on body to play any audio signal
3.1.14
wireless LAN
WLAN
local area network in which data are transferred without the use of wires
[SOURCE: IEC 60050-732:2010, 732-01-05]
3.2 Abbreviated terms
AM amplitude modulation
DAB digital audio broadcasting
dB decibel
dBA A-weighted decibel
dBFS decibels relative to full scale
FM frequency modulation
kPa kilopascal
RMS root mean square
SPL sound pressure level
HATS head and torso simulator
4 Measurement conditions
4.1 General
Tests for items related to acoustic characteristics shall be performed in accordance with
IEC 60268-5 and IEC 60268-7. Connection between audio signal source and the EUT (wearable
powered loudspeaker) shall be set-up in accordance with IEC 61938. Digital audio interface is
defined in the IEC 60958 series.
4.2 Environmental conditions
– Air pressure 86 kPa to 106 kPa
– Ambient temperature 15 °C to 35 °C, preferably at 20 °C
– Relative humidity 25 % to 75 %
4.3 Acoustical environment
SPL measurements shall be made under the free-field conditions specified in
IEC 60268-5:2003, 5.2.
4.4 Input signal
4.4.1 Test signal
The simulated programme signal specified by IEC 60268-1 shall be used. The crest factor
should be 2 and the deviation of the crest factor should be within ±10 %. The reference voltage
measurement signal shall be 1,0 V RMS, measured with an RMS voltmeter. For the digital signal,
a simulated programme signal recorded at a recording level of −10 dBFS shall be used.
4.4.2 Radio broadcast test signal
The radio receiver uses a standard signal generator, and the modulation of the test signal is
30 % modulated for both the AM broadcast receiver and the FM broadcast receiver. DAB/DAB+
receiver, digital wireless receivers including wireless LAN and Bluetooth® use a test signal
recorded at a recording level of −10 dBFS.
4.4.3 Other digital equipment
Use a test signal recorded at a recording level of −10 dBFS. If compressed recording is used,
the level before compression is −10 dBFS.
4.5 Reproduced sound pressure level
The reproduced sound pressure level should be 70 dBA, which is intended to represent a
medium sound level, and assumes listening at a typical volume.
If any other sound pressure level value is used, the purpose together with the value shall be
specified in the measurement report.
4.6 Background noise
The background noise during sound pressure level measurement shall be 10 dB or be less than
the measured value.
4.7 Measurement accuracy
The total error of the measured value shall be within ±2 dB.
4.8 Battery
Dry batteries (primary batteries) shall be unused with the standard capacity of the type specified
by the manufacturer. Rechargeable batteries (secondary batteries) shall be those attached to
the equipment or activated with a standard capacity of the type specified by the manufacturer
according to the instruction manual, etc. The batteries shall be fully charged according to the
EUT's instruction manual.
___________
Bluetooth® is a registered trademark of the Bluetooth SIG. This information is given for the convenience of users
of this document and does not constitute an endorsement by IEC of the product named. Equivalent products may
be used if they can be shown to lead to the same results.
4.9 HATS, pinna simulator, ear simulator
The HATS and its acoustic diffraction shall be as specified in IEC 60318-7. This simulator
represents a median adult human head and torso, extending in total from the top of the head to
the waist, and is designed to simulate the sound pick-up characteristics for the measurement.
A pinna simulator as specified in IEC 60268-7 and an ear simulator as specified in IEC 60318-4
shall be used in the HATS.
4.10 1/3 octave-band analyser
The sound pressure level shall be measured by using an analyser with the characteristics of a
1/3 octave-band filter as specified in IEC 61260-1.
4.11 Voltmeter
Use a voltmeter with an RMS indicator.
4.12 A-characteristic filter
A filter with a frequency weighting characteristic A with tolerance ±1 dB as specified for sound
level measurements in IEC 61672-1 shall be used.
4.13 Free-field compensating filter
The filter with inverse response of the free-field response of the HATS shall be as specified in
IEC 60318-7.
5 Measurement method
5.1 General
Connect the EUT and measuring instruments as described in Figure 1. Measures or tests are
performed on EUT in factory shipping condition unless otherwise specified in 5.4. If there is an
input signal or video output that affects the battery duration, the setting is determined by the
manufacturer and clearly stated in the equipment instructions. This document recommends the
order for the measurement procedure as given in Figure 2.
Figure 1 – Connection diagram of equipment [SOURCE: Figure 2 of JEITA CP-2907]
Figure 2 – Order of measurement
___________
Reproduced and adapted from JEITA CP-2907 'Methods of Measurement for Battery Duration on Wearable Speaker
Equipment' with the permission of JEITA.
5.2 Set up of EUT on HATS
Set up EUT on HATS. An EUT that can be carried on the shoulder, such as a neckband speaker,
is carried on the shoulder of the HATS. If the EUT is not placed on the shoulder, the
manufacturer's instruction manual may be followed.
5.3 Operating condition
5.3.1 Input condition
Set an input signal as specified in 4.4.
5.3.2 Output condition
Set to a condition that is continuous sound output.
NOTE A smart loudspeaker can specify the continuous music playback time excluding the standby time.
5.4 Adjustment of controls
The EUT is installed in the shipping condition as shown in Figure 1, and the volume control
shall be set to the sound pressure level specified in 4.5. If the specified output cannot be
obtained due to the coarseness of the resolution of the volume control circuit, the input signal
level may be adjusted within the resolution range of the volume controller. If the purpose is
clearly stated, measurement settings other than these conditions may be used.
5.5 Measurement of battery duration
After setting up the EUT to the measurement conditions, start the measurement using the
battery specified for the measurement. The time until the sound is interrupted, or abnormal
operation is performed, shall be measured. The state where the sound is interrupted is a state
where the sound output from the speaker is stopped and does not include a state where the
sound is distorted, or the sound pressure is low. If the sound pressure changes by more than
3 dB during measurement, the state shall be specified.
5.6 Characteristics to be specified
The manufacturer shall state the following values in the product datasheet, specification, or any
similar user communication:
a) the measured battery duration, in 15 min steps up to and including 4 h, for a battery duration
of 4 h and longer in 30 min steps, rounded down to the next value;
b) the type of signal input and SPL in dBA;
c) the battery type utilized as power source, fixed installation or user replaceable.
NOTE Annex A shows an example of characteristics to be specified.
Annex A
(informative)
Example of characteristics to be specified
A.1 General
Examples of specifications for battery duration are shown in Clause A.2 and Clause A.3.
A.2 Example 1 of battery duration
Battery duration:
Approximately 4 h AA manganese battery (R20P) for Bluetooth® connection at 70 dBA.
A.3 Example 2 of battery duration
Battery duration:
Battery duration of lithium-ion battery for wireless LAN connection at 70 dBA
Approximately 6 h
NOTE For composite equipment, the battery duration can be specified by the shortest battery duration condition.
It is desirable to clarify the battery type, model and trademark.
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.
Loading comments...