ISO/IEC 30122-2:2017

INTERNATIONAL ISO/IEC
STANDARD 30122-2
First edition
2017-02
Information technology — User
interfaces — Voice commands —
Part 2:
Constructing and testing
Technologies de l’information — Interfaces utilisateurs —
Commandes vocales —
Partie 2: Construire et tester
Reference number
ISO/IEC 30122-2:2017(E)
©
ISO/IEC 2017

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ISO/IEC 30122-2:2017(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO/IEC 2017, Published in Switzerland
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ISO/IEC 30122-2:2017(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Conformity . 2
5 Requirements and recommendations. 2
5.1 General . 2
5.2 Phonetics of phrase for a voice command . 2
5.3 Design principle for a voice command . 2
5.3.1 Phonetic description of words . 2
5.3.2 Ease of pronunciation . . 2
5.3.3 Variation of pronunciation . 2
5.4 Test of speech recognition engine . 3
5.4.1 General. 3
5.4.2 Subject. 3
5.4.3 Samples of a voice command . 3
5.4.4 Conditions of test . 3
5.4.5 Procedure of test . 3
5.4.6 Results . 4
Bibliography . 5
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ISO/IEC 30122-2:2017(E)

Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical
Commission) form the specialized system for worldwide standardization. National bodies that are
members of ISO or IEC participate in the development of International Standards through technical
committees established by the respective organization to deal with particular fields of technical
activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international
organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the
work. In the field of information technology, ISO and IEC have established a joint technical committee,
ISO/IEC JTC 1.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment,
as well as information about ISO’s adherence to the World Trade Organization (WTO) principles in the
Technical Barriers to Trade (TBT) see the following URL: www . i so .org/ iso/ foreword .html.
The committee responsible for this document is ISO/IEC JTC 1, Information technology, Subcommittee
SC 35, User interfaces.
A list of all parts in the ISO/IEC 30122 series can be found on the ISO website.
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ISO/IEC 30122-2:2017(E)

Introduction
Voice command is used for controlling ICT devices with the voice and in the language of the user. This
technology is based on speech recognition, with some consideration for language tolerance (different
accents or speech impairment while using a given language). It is also beneficial to the people who are
operating the ICT device when/where they cannot use hands or fingers to operate it.
This document defines the principal standardized voice commands that will be commonly used in
various ICT devices.
© ISO/IEC 2017 – All rights reserved v

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