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SLOVENSKI STANDARD
SIST EN 62731:2018
01-november-2018
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SIST EN 62731:2013
Pretvorba besedila v govor (govorna sinteza) za televizijo - Splošne zahteve
Text to speech for television - General requirements
Text-zu-Sprache für Fernsehen - Allgemeine Anforderungen
Synthèse vocale pour télévision - Exigences générales
Ta slovenski standard je istoveten z: EN IEC 62731:2018
ICS:
33.160.25 Televizijski sprejemniki Television receivers
SIST EN 62731:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
SIST EN 62731:2018
SIST EN 62731:2018
EUROPEAN STANDARD EN IEC 62731
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2018
ICS 33.160.25; 33.160.99 Supersedes EN 62731:2013
English Version
Text-to-speech for television - General requirements
(IEC 62731:2018)
Synthèse vocale pour télévision - Exigences générales Text-zu-Sprache für Fernsehen - Allgemeine
(IEC 62731:2018) Anforderungen
(IEC 62731:2018)
This European Standard was approved by CENELEC on 2018-02-14. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, 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
© 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 62731:2018 E
SIST EN 62731:2018
European foreword
The text of document 100/2989/FDIS, future edition 2 of IEC 62731, prepared by IEC/TC 100 "Audio,
video and multimedia systems and equipment" was submitted to the IEC-CENELEC parallel vote and
approved by CENELEC as EN IEC 62731:2018.
The following dates are fixed:
(dop) 2018-11-14
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2021-02-14
standards conflicting with the
document have to be withdrawn
This document supersedes EN 62731:2013.
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.
Endorsement notice
The text of the International Standard IEC 62731:2018 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated:
ISO/IEC 13818-1 NOTE Harmonized as EN ISO/IEC 13818-1.
SIST EN 62731:2018
IEC 62731
Edition 2.0 2018-01
INTERNATIONAL
STANDARD
Text-to-speech for television – General requirements
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.160.25; 33.160.99 ISBN 978-2-8322-5125-6
SIST EN 62731:2018
– 2 – IEC 62731:2018 © IEC 2018
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms, definitions and abbreviated terms . 5
3.1 Terms and definitions . 5
3.2 Abbreviated terms . 6
4 Guiding principles and conventions . 7
5 User requirements of visually impaired people . 7
5.1 Users' needs . 7
5.2 Navigating channels . 8
5.3 Navigating TV inputs . 8
5.4 Additional data services . 8
5.5 Operating the TV . 8
5.6 TV use . 8
6 Functional requirements . 9
6.1 Functionality for TV, TTS device combination . 9
6.2 Functionality: TTS device/engine . 10
6.3 Functionality: TV . 10
6.4 Setting up: TV, TTS device combination . 11
7 TV events and TTS data . 11
7.1 TV context and events . 11
7.2 TTS data per event . 12
7.2.1 Details . 12
7.2.2 Channel change . 12
7.2.3 Additional information . 13
7.2.4 Navigation and selection . 13
7.2.5 Context switch . 14
7.2.6 Pop-up message . 16
8 TTS profiles . 16
8.1 Basic profile . 16
8.2 Main profile . 16
8.3 Enhanced profile . 17
8.4 Summary . 18
Bibliography . 19
Figure 1 – TV – TTS device system diagram . 9
Figure 2 – Context event state diagram . 12
Table 1 – Overview of profiles . 18
SIST EN 62731:2018
IEC 62731:2018 © IEC 2018 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
TEXT-TO-SPEECH FOR TELEVISION –
GENERAL REQUIREMENTS
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) 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 62731 has been prepared by IEC technical committee 100: Audio,
video and multimedia systems and equipment.
This second edition cancels and replaces the first edition published in 2013. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) in 6.2, the levels of announcement quality were revised as well as considerations for ways
in which device users can provide service providers with feedback on incorrectly
announced terms.
b) in 6.3, the following TV functionality was added: the TV can receive updated words,
associated conversions and updated conversion rules for the TTS engine via a network
connection.
SIST EN 62731:2018
– 4 – IEC 62731:2018 © IEC 2018
The text of this standard is based on the following documents:
FDIS Report on voting
100/2989/FDIS 100/3013/RVD
Full information on the voting for the approval of this International Standard 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.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.
SIST EN 62731:2018
IEC 62731:2018 © IEC 2018 – 5 –
TEXT-TO-SPEECH FOR TELEVISION –
GENERAL REQUIREMENTS
1 Scope
This International Standard specifies the text-to-speech functionality for a (broadcast) receiver
with a text-to-speech system. Such a system may be one device, i.e. a receiver with an
integrated text-to-speech generator, or may be two devices, i.e. a receiver interfacing with an
external text-to-speech device. This document applies only to completely functional stationary
(or semi-stationary) digital TV receivers such as set top boxes, integrated digital TVs,
recorders and other products whos
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