Assistive listening devices and systems for active assisted living - Part 1: General

IEC 63087-1:2021 specifies requirements, and the associated methods of measurement, for the electroacoustic performance of personal listening systems.
This document specifies requirements for the provision of assistive listening in audio, video and multimedia systems and equipment. The requirements are of different kinds, because of the diversity of the hardware concerned. Existing IEC standards for methods of measurement are normatively referenced if they exist. Methods of measurement and performance requirements are specified in IEC 63087-2.
This document does not apply to hearing aids. Also excluded are devices entirely worn on or in the ear, which cannot be measured independently.

Dispositifs et systèmes d'aide à l'audition pour l'assistance à l'autonomie à domicile - Partie 1: Généralités

L'IEC 63087-1:2021 définit les exigences ainsi que les méthodes de mesurage associées pour les performances électroacoustiques des systèmes d'écoute personnels.
Le présent document définit les exigences relatives à la mise à disposition d'une aide à l'audition dans les systèmes et équipements audio, vidéo et multimédias. Compte tenu de la diversité des matériels concernés, les exigences sont de différents types. Les normes IEC existantes relatives aux méthodes de mesurage sont citées en référence de manière normative, le cas échéant. Les méthodes de mesurage et les exigences de performance sont définies dans l'IEC 63087-2 .
Le présent document ne s'applique pas aux appareils de correction auditive. Les dispositifs portés entièrement sur ou à l'intérieur de l'oreille, qui ne peuvent pas faire l'objet de mesures indépendantes, sont également exclus.

General Information

Status
Published
Publication Date
25-Aug-2021
Current Stage
PPUB - Publication issued
Completion Date
26-Aug-2021
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IEC 63087-1
Edition 1.0 2021-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Assistive listening devices and systems for active assisted living –
Part 1: General
Dispositifs et systèmes d'aide à l'audition pour l'assistance à l'autonomie à
domicile –
Partie 1: Généralités
IEC 63087-1:2021-08(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 63087-1
Edition 1.0 2021-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Assistive listening devices and systems for active assisted living –
Part 1: General
Dispositifs et systèmes d'aide à l'audition pour l'assistance à l'autonomie à
domicile –
Partie 1: Généralités
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.180; 33.160.99 ISBN 978-2-8322-1010-3

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
---------------------- Page: 3 ----------------------
– 2 – IEC 63087-1:2021 © IEC 2021
CONTENTS

FOREWORD ........................................................................................................................... 3

INTRODUCTION ..................................................................................................................... 5

1 Scope .............................................................................................................................. 6

2 Normative references ...................................................................................................... 6

3 Terms and definitions ...................................................................................................... 6

4 General ........................................................................................................................... 7

4.1 Assistive listening devices and systems .................................................................. 7

4.2 Sources of audio for assistive listening ................................................................... 7

4.3 Dedicated assistive listening systems ..................................................................... 8

5 Requirements in the context of accessibility and ease of use ........................................... 8

5.1 Requirements for products and systems under the control of the user ..................... 8

5.1.1 General requirements ...................................................................................... 8

5.1.2 Considerations for specific products and systems under the control of

the user ........................................................................................................... 9

5.2 Requirements for products and systems not under the control of the user ............... 9

5.2.1 General requirements ...................................................................................... 9

5.2.2 Considerations for specific products and systems not under the control

of the user ..................................................................................................... 10

6 Claims of conformity ...................................................................................................... 10

Bibliography .......................................................................................................................... 11

Table 1 – Sources of audio for assistive listening .................................................................... 7

Table 2 – Dedicated assistive listening systems ...................................................................... 8

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IEC 63087-1:2021 © IEC 2021 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ASSISTIVE LISTENING DEVICES AND SYSTEMS
FOR ACTIVE ASSISTED LIVING –
Part 1: General
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,

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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

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3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

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services carried out by independent certification bodies.

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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.

IEC 63087-1 has been prepared by Technical Area 16: Active Assisted Living (AAL), wearable

electronic devices and technologies, accessibility and user interfaces of IEC technical

committee 100: Audio, video and multimedia systems and equipment. It is an International

Standard.
The text of this International Standard is based on the following documents:
FDIS Report on voting
100/3601/FDIS 100/3623/RVD

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.
---------------------- Page: 5 ----------------------
– 4 – IEC 63087-1:2021 © IEC 2021

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/standardsdev/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,
• replaced by a revised edition, or
• amended.
---------------------- Page: 6 ----------------------
IEC 63087-1:2021 © IEC 2021 – 5 –
INTRODUCTION

AAL (Active Assisted Living) aims to improve the quality of users lives. The user is any person

of any age who uses or benefits from AAL products, services and systems. IEC has created the

Systems Committee AAL which is tasked to develop systems standards taking into account the

following: products, services and systems, safety, security and privacy.

The TC 100 title items, audio, video and multimedia devices and systems provide various

services to users; however, some of users may have difficulties of hearing, viewing and sensing

because of their age or some other reasons. As the number of such users is increasing, IEC

meets these needs with the philosophy of AAL.

The legacy standardization work focuses on providing quality and functions to the ordinary user;

this document specifies the requirement for providing audio quality and functionalities to the

users who have some difficulties with hearing and listening.

Personal listening systems are used to improve the perception and audibility of a range of sound

sources when listening in non-ideal situations. Examples of these include listening to a

television when not seated close to it, following a discussion in a meeting, engaging in a one-

to one conversation, or in other applications where programme material is available such as

transport, theatre or education environments where provision for access enables users to

overcome the presence of competing background noise.

Personal listening systems are widely used by those with normal hearing, but in some instances

by those who have a mild hearing loss, but either do not consider that they need a hearing aid,

or do not meet health-care criteria for hearing aid provision.

Unlike hearing aids, which are classified as medical devices and require an appropriately

trained and competent hearing aid professional to assess an individual's hearing and select and

fit a suitable device, personal listening systems are not provided for by current regulatory

requirements. Requirements for hearing aid performance are specified within the

IEC 60118 series and aspects relating to hearing aid safety are specified in the relevant parts

of the IEC 60601 series.

Changes in regulatory restrictions on the marketing of devices intended to assist hearing lead

to the need to create an electroacoustic performance standard (including the related methods

of measurement) for personal listening systems. This document specifies basic requirement for

personal listening systems, establishes a control on their maximum sound pressure level output

and establishes defines recommended performance in other respects, including frequency

response, distortion and internally generated noise.

This document only makes provision for the electroacoustic performance of personal listening

systems which relate to their input and output. Products which physically resemble modern

hearing aids and which are entirely worn on or in the ear are also excluded from the scope of

this document.

This document is intended to co-ordinate with IEC TC 100 activity on the accessibility of audio

sources.
---------------------- Page: 7 ----------------------
– 6 – IEC 63087-1:2021 © IEC 2021
ASSISTIVE LISTENING DEVICES AND SYSTEMS
FOR ACTIVE ASSISTED LIVING –
Part 1: General
1 Scope

This part of IEC 63087 specifies requirements, and the associated methods of measurement,

for the electroacoustic performance of personal listening systems.

This document specifies requirements for the provision of assistive listening in audio, video and

multimedia systems and equipment. The requirements are of different kinds, because of the

diversity of the hardware concerned. Existing IEC standards for methods of measurement are

normatively referenced if they exist. Methods of measurement and performance requirements

are specified in IEC 63087-2 .

This document does not apply to hearing aids. Also excluded are devices entirely worn on or in

the ear, which cannot be measured independently.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following

addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
product

piece of equipment, possibly comprising several objects that work together, which is typically

acquired by a member of the general public as a single purchase
EXAMPLE 1 A television receiver.

EXAMPLE 2 A radio headphone kit, comprising headphones, transmitter and power supply.

Note 1 to entry: The term 'product' is used to improve clarity, as the term 'equipment' is considered to be rather

'technical'.
___________
Under preparation.
---------------------- Page: 8 ----------------------
IEC 63087-1:2021 © IEC 2021 – 7 –
3.2
personal listener

product relaying an acoustic input signal to an acoustic output transducer, for listening purposes

Note 1 to entry: A system will at least comprise a microphone, an electrotechnical amplifier and earphones or

headphones.

Note 2 to entry: Additional items can be included, such as a neck loop for use with hearing aids, or a magnetic pick-

up coil for use with hearing-loop systems.
3.3
assistive listening
listening with assistance of technologies
3.4
hearing aid

portable instrument intended to assist the hearing of persons with impaired hearing, usually

consisting of a microphone, amplifier and earphone or bone vibrator

Note 1 to entry: A hearing aid is a medical device selected and fitted by an appropriately trained and competent

hearing aid professional.
4 General
4.1 Assistive listening devices and systems

Assistive listening systems consist of dedicated listening devices and audio amplifiers.

4.2 Sources of audio for assistive listening

No such list can be exhaustive, but the major sources are listed in Table 1, with the applicable

IEC 'methods of measurement' standard, if it exists, and an applicable performance standard,

if it exists. The list is intended to be updated as new sources qualify for inclusion.

Table 1 – Sources of audio for assistive listening
Product or system 'Methods of measurement' Applicable 'interoperability
standard
standard'
Radio receiver IEC 60315-4 IEC 61938
Television receiver IEC 60107-1 and IEC 60107-2 IEC 61938
Video player IEC 60268-3 IEC 61938
Personal music player IEC 60268-3 IEC 61938
Smart phone and its expansion IEC 61606-3 IEC 61938
system
PC, tablet IEC 61606-3 IEC 61938
Home audio system IEC 60268-3 IEC 61938
Car audio system IEC 60268-3 IEC 61938
Sound reinforcement system IEC 60268-3 IEC 61938
Microphone IEC 60268-4 IEC 61938
Intercommunication system IEC 60268-3 IEC 61938
Audio over IP system EBU Tech 3326

IEC 61938 gives recommended electrical interface characteristics for the connection of assistive listening

devices as accessories.
---------------------- Page: 9 ----------------------
– 8 – IEC 63087-1:2021 © IEC 2021
4.3 Dedicated assistive listening systems

Table 2 gives a non-exclusive list of such systems, but the list is intended to be updated as new

systems qualify for inclusion.
Table 2 – Dedicated assistive listening systems
Type of system Applicable standards Notes
Hearing-loop system IEC 60118-4, IEC 62489-1, Studied by IEC TC29. Include
IEC TR 63079 methods of measurement and
performance requirements.
Personal listener IEC 63087-2 Standard to include methods of
measurement and performance
requirements. Product includes
microphone, amplifier and
earpieces. Can include input from
any system type, and or output to
telecoil or other method as
applicable.
Infra-red system This was a TC 100 standard, but
IEC 60914
not dedicated to assistive listening.
Includes infra-red headphones.
Radio system (VHF) Includes radio headphones.
Wireless system (2,4 GHz and Includes wireless headphones.
similar)
Audio vibration system ‘Body sonic’ is an example.
Sound field system IEC 62777 With directional loudspeaker or
parametric sound system.
5 Requirements in the context of accessibility and ease of use
5.1 Requirements for products and systems under the control of the user
5.1.1 General requirements

These requirements apply generally, but one or more might be inapplicable in some cases. The

manufacturer shall be prepared to justify any deviation.

• Designs shall take into account that users might have impaired vision and manual dexterity,

in addition to hearing impairment.

• Rotary controls are more suitable than push-buttons or touch controls with a visual display.

• Voice control; voice or sound information or instruction.

• Controls shall be labelled in words, not only symbols; overlays or adhesive labels can be

provided for labelling in different languages.

• Alpha-numeric characters shall be at least 3 mm high (x-height) and strongly contrast with

their background.

NOTE Black text in a sans-serif font on any light-coloured background can usually be read easily.

• Controls of functionality shall be easy and less complexity.
___________
This document was withdrawn.
---------------------- Page: 10 ----------------------
IEC 63087-1:2021 © IEC 2021 – 9 –

5.1.2 Considerations for specific products and systems under the control of the user

5.1.2.1 Radio receivers

Radio receivers shall provide, in addition to any other audio signal format, a single channel of

acceptable 'mono' composition, either digital or analogue, suitable for connection to an assistive

listening accessory.

NOTE A two-channel 'stereo' signal might be provided as well, but the demand for stereo in the hearing-impaired

community is low, because many have very different impairments in the two ears.
5.1.2.2 Television receivers

Television receivers shall provide, in addition to any other audio signal format, a single channel

of acceptable 'mono' composition and support a dedicated audio channel for narration, either

digital or analogue, suitable for connection to an assistive listening accessory. A dedicated

channel for narration or commentary is available in some multichannel audio systems; it is

applicable to a part of the mono composition.

NOTE A two-channel 'stereo' signal might be provided as well, but the demand for stereo in the hearing-impaired

community is low, because many have very different impairments in the two ears.
5.1.2.3 Video players

It is the same as television receivers, in addition slower audio playback capability in accordance

with slow-motion video playback is useful functionality.
5.1.2.4 Personal music player

Personal music player shall provide a single channel of acceptable 'mono' composition, tone

control functionality and dedicated loudness control functionality.
5.1.2.5 Smart phone and its expansion system

Smart phone and its expansion system shall provide a single channel of acceptable 'mono'

composition, tone control functionality and dedicated loudness control functionality.

5.1.2.6 Home audio system

Home audio system shall provide a single channel of acceptable 'mono' composition, tone

control functionality and dedicated loudness control functionality. Multichannel audio system

should provide a dedicated channel for narration or commentary.
5.1.2.7 Intercommunication system

Intercommunication system shall provide tone control functionality and dedicated loudness

control functionality.
5.2 Requirements for products and systems not under the control of the user
5.2.1 General requirements

It is essential that staff responsible for such products and systems can easily check whether

the product or system is in operation, because field experience over many years shows that

there is a major failing in this respect. It is preferable that users can also make this check,

without having to approach staff.
---------------------- Page: 11 ----------------------
– 10 – IEC 63087-1:2021 © IEC 2021

5.2.2 Considerations for specific products and systems not under the control of the

user
5.2.2.1 Hearing-loop systems

IEC TR 63079 includes recommendations for monitoring the operation of hearing-loop systems,

to ensure that they are available to users.
5.2.2.2 Infra-red and radio systems

In the absence of specific standards, the recommendations of IEC TR 63079 on monitoring

should be followed insofar as they are applicable.
6 Claims of conformity

A manufacturer claiming that a product or system conforms to this document shall make easily

available to the general public a document showing how conformity is achieved.
---------------------- Page: 12 ----------------------
IEC 63087-1:2021 © IEC 2021 – 11 –
Bibliography
IEC 60107-1:1997, Methods of measurement on receivers for television broadcast

transmissions – Part 1: General considerations – Measurements at radio and video frequencies

IEC 60107-2, Methods of measurement on receivers for television broadcast transmissions –

Part 2: Audio channels – General methods and methods for monophonic channels
IEC 60118 (all parts), Electroacoustics – Hearing aids

IEC 60118-4:2014, Electroacoustics – Hearing aids – Part 4: Induction-loop systems for hearing

aid purposes – System performance requirements
IEC 60118-4:2014/AMD1:2017
IEC 60268-3, Sound system equipment – Part 3: Amplifiers
IEC 60268-4, Sound system equipment – Part 4: Microphones

IEC 60315-4, Methods of measurement on radio receivers for various classes of emission –

Part 4: Receivers for frequency-modulated sound broadcasting emissions
IEC 60601 (all parts), Medical electrical equipment

IEC 61606-3:2008, Audio and audiovisual equipment – Digital audio parts – Basic measurement

methods of audio characteristics – Part 3: Professional use
, Conference systems – Electrical and audio requirements
IEC 60914:1988

IEC 61938:2018, Multimedia systems – Guide to the recommended characteristics of analogue

interfaces to achieve interoperability (GMT)

IEC 62489-1:2010, Electroacoustics – Audio-frequency induction loop systems for assisted

hearing – Part 1: Methods of measuring and specifying the performance of system components

IEC 62489-1:2010/AMD1:2014
IEC 62489-1:2010/AMD2:2017

IEC 62777:2016, Quality evaluation method for the sound field of directional loudspeaker array

system
IEC TR 63079:2017, Code of practice for hearing-loop systems (HLS)
IEC TR 63079:2017/AMD1:2018
IEC TR 63079:2017/AMD2:2020

IEC 63087-2, Assistive listening devices and systems for active assisted living – Methods of

measurement and performance requirements

EBU Tech 3326:2014, Audio contribution over IP – Requirements for Interoperability

___________
___________
This document was withdrawn.
Under preparation.
---------------------- Page: 13 ----------------------
– 12 – IEC 63087-1:2021 © IEC 2021
SOMMAIRE

AVANT-PROPOS .................................................................................................................. 13

INTRODUCTION ................................................................................................................... 15

1 Domaine d'application ................................................................................................... 16

2 Références normatives .................................................................................................. 16

3 Termes et définitions ..................................................................................................... 16

4 Généralités .................................................................................................................... 17

4.1 Dispositifs et systèmes d'aide à l'audition ............................................................. 17

4.2 Sources audio pour l'aide à l'audition .................................................................... 17

4.3 Systèmes dédiés d'aide à l'audition ....................................................................... 18

5 Exigences dans le contexte de l'accessibilité et de la facilité d'utilisation ....................... 18

5.1 Exigences pour les produits et les systèmes sous le contrôle de l'utilisateur ......... 18

...

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