Electroacoustics - Hearing aids - Part 4: Induction-loop systems for hearing aid purposes - System performance requirements (IEC 60118-4:2014/A1:2017)

Akustik - Hörgeräte - Teil 4: Induktionsschleifen für Hörgeräte - Leistungsanforderungen (IEC 60118-4:2014/A1:2017)

Électroacoustique - Appareils de correction auditive - Partie 4: Systèmes de boucles d'induction utilisées à des fins de correction auditive - Exigences de performances système (IEC 60118-4:2014/A1:2017)

Elektroakustika - Slušni pripomočki - 4. del: Sistemi z indukcijsko zanko za slušne pripomočke - Zahteve sistema - Dopolnilo A1 (IEC 60118-4:2014/A1:2017)

Standard EN-IEC 60118-4 se uporablja za sisteme z avdio-frekvenčno indukcijsko zanko, ki proizvajajo izmenično magnetno polje pri zvočnih frekvencah in ki so namenjeni proizvajanju vhodnih signalov za slušne pripomočke s tuljavo, ki sprejema indukcijske signale (teletuljava). Standard predvideva, da so slušni aparati, s katerimi se uporablja, v skladu z vsemi ustreznimi deli standarda IEC 60118. Ta standard določa zahteve za jakost polja v avdio-frekvenčnih indukcijskih zankah za namene slušnih pripomočkov, ki bo omogočala ustrezno razmerje med signalom in šumom, ne da bi prišlo do preobremenitve slušnega pripomočka. Standard prav tako določa minimalne zahteve za frekvenčni odziv za sprejemljivo razumljivost. Določene so metode za merjenje jakosti magnetnega polja in podane so informacije o primerni merilni opremi (glej dodatek B), informacije, namenjene operaterju in uporabnikom sistema (glej dodatek C) ter drugi pomembni vidiki. Ta standard ne določa zahtev za ojačevalnike z zančnim gonilnikom ali sorodne mikrofone ali vire zvočnih signalov, ki so zajeti v standardu IEC 62489-1, ali za jakost polja, ki jo ustvari oprema, kot na primer telefonska slušalka, zajeta v standardu ITU-T P.370.

General Information

Status
Published
Public Enquiry End Date
31-Aug-2017
Publication Date
28-Feb-2018
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
14-Feb-2018
Due Date
21-Apr-2018
Completion Date
01-Mar-2018

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SLOVENSKI STANDARD
SIST EN IEC 60118-4:2015/A1:2018
01-april-2018

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Electroacoustics - Hearing aids - Part 4: Induction-loop systems for hearing aid purposes

- System performance requirements (IEC 60118-4:2014/A1:2017)

Akustik - Hörgeräte - Teil 4: Induktionsschleifen für Hörgeräte - Leistungsanforderungen

(IEC 60118-4:2014/A1:2017)

Électroacoustique - Appareils de correction auditive - Partie 4: Systèmes de boucles

d'induction utilisées à des fins de correction auditive - Exigences de performances

système (IEC 60118-4:2014/A1:2017)
Ta slovenski standard je istoveten z: EN IEC 60118-4:2015/A1:2018
ICS:
11.180.15 3ULSRPRþNL]DJOXKHRVHEHLQ Aids for deaf and hearing
RVHEH]RNYDURVOXKD impaired people
17.140.50 Elektroakustika Electroacoustics
SIST EN IEC 60118-4:2015/A1:2018 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN IEC 60118-4:2015/A1:2018
---------------------- Page: 2 ----------------------
SIST EN IEC 60118-4:2015/A1:2018
EUROPEAN STANDARD EN IEC 60118-4:2015/A1
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2018
ICS 17.140.50
English Version
Electroacoustics - Hearing aids - Part 4: Induction-loop systems
for hearing aid purposes - System performance requirements
(IEC 60118-4:2014/A1:2017)

Électroacoustique - Appareils de correction auditive - Partie Akustik - Hörgeräte - Teil 4: Induktionsschleifen für

4: Systèmes de boucles d'induction utilisées à des fins de Hörgeräte - Leistungsanforderungen

correction auditive - Exigences de performances système (IEC 60118-4:2014/A1:2017)

(IEC 60118-4:2014/A1:2017)

This amendment A1 modifies the European Standard EN 60118-4:2015; it was approved by CENELEC on 2017-12-14. CENELEC

members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this amendment 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 amendment 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 60118-4:2015/A1:2018 E
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SIST EN IEC 60118-4:2015/A1:2018
EN IEC 60118-4:2015/A1:2018 (E)
European foreword

The text of document 29/952/CDV, future edition 1 of IEC 60118-4:2014/A1:2017, prepared by

IEC/TC 29 "Electroacoustics" was submitted to the IEC-CENELEC parallel vote and approved by

CENELEC as EN IEC 60118-4:2015/A1:2018.
The following dates are fixed:
(dop) 2018-09-14
• 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) 2020-12-14
standards conflicting with the
document have to be withdrawn

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 60118-4:2014/A1:2017 was approved by CENELEC as a

European Standard without any modification.
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SIST EN IEC 60118-4:2015/A1:2018
IEC 60118-4
Edition 3.0 2017-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 1
AM ENDEMENT 1
Electroacoustics – Hearing aids –
Part 4: Induction-loop systems for hearing aid purposes – System performance
requirements
Électroacoustique – Appareils de correction auditive –
Partie 4: Systèmes de boucles d'induction utilisées à des fins de correction
auditive – Exigences de performances système
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.140.50 ISBN 978-2-8322-4970-3

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: 5 ----------------------
SIST EN IEC 60118-4:2015/A1:2018
– 2 – IEC 60118-4:2014/AMD1:2017
IEC 2017
FOREWORD
This amendment has been prepared by committee IEC technical committee 29:
Electroacoustics.
The text of this amendment is based on the following documents:
CDV Report on voting
29/952/CDV 29/961/RVC

Full information on the voting for the approval of this amendment can be found in the report

on voting indicated in the above table.

The committee has decided that the contents of this amendment and the base publication will

remain unchanged until the stability date indicated on the IEC website under

"http://webstore.iec.ch" in the data related to the specific publication. At this date, the

publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
_____________
3 Terms and definitions
Add, after 3.3, the following new term and definition:
3.4
automatic gain control
AGC

process or device by which the gain of an amplifier is controlled by the level of the output

signal so as to reduce changes in this level as compared with the changes in the input signal

Note 1 to entry: Frequently, automatic gain control is used to keep the output signal level nearly constant.

Note 2 to entry: There is a consistent but more general definition in IEC 60118-7, but this standard may have a

limited future, so the IEV definition is preferred.
9 Small-volume systems
Replace the existing text of Clause 9 by the following new text:
9.1 Definition of measurement points

For small-volume systems, it is possible and necessary in some applications to specify in this

standard the positions of the measurement points. For this reason, points are specified for

both disabled refuge and similar call points, and for counter systems. However, where these

suggested measurement points are not practical, the "useful magnetic field volume" method

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SIST EN IEC 60118-4:2015/A1:2018
IEC 60118-4:2014/AMD1:2017 – 3 –
IEC 2017

as defined in 9.4 can be applied, the details of which should be agreed as part of the

contractual requirements.
9.2 Disabled refuge and similar call-points

Measurements shall be made at the six points specified in Figures 2 a) and b). The reference

point (or line) is the face or surface of the call point, intercom, or help point closest to the

user, and is not necessarily the location of the magnetic field source.

The semi-circular layout is suitable for small magnetic field sources and the rectangular layout

is suitable for vertical or floor loop sources. Only one of the methods shall be used for a given

system.

NOTE An offset (shown as l in Figure 2) between the reference point (or line) and the position of the magnetic

field source promotes evenness of field pattern over the area where people are expected to stand.

---------------------- Page: 7 ----------------------
SIST EN IEC 60118-4:2015/A1:2018
– 4 – IEC 60118-4:2014/AMD1:2017
IEC 2017
45° 45°
IEC
Key
1 magnetic field source
2 reference point
3 area where people are expected to stand
l offset
l inner radius: 300 mm
l +l outer radius: 500 mm
2 3
a) Magnetic field source of small dimensions
= =
3 3
= =
IEC
Key
1 magnetic field source (vertical loop)
2 reference line
3 area where people are expected to stand
l offset
l 300 mm
l 200 mm
l 424 mm
l 700 mm
b) Larger magnetic field source
Figure 2 – Measurement points for disabled refuge
and similar call-points
l l l
3 2 1
---------------------- Page: 8 ----------------------
SIST EN IEC 60118-4:2015/A1:2018
IEC 60118-4:2014/AMD1:2017 – 5 –
IEC 2017

The six measurement points are required at 1,2 m and 1,7 m (see Figure 3 b)), but there is no

requirement to measure at 1,45 m.
9.3 Counter systems

Measurements shall be made at the points specified in Figures 3 a) and b). The reference

point is the face or surface of the counter closest to the user, and is not necessarily the

position of the magnetic field source. For counter systems, there is often a requirement to

control overspill to an adjacent counter position. Controlling this overspill is likely to be a

significant factor in design, and as such may result in a compromise of evenness of field over

the area where people are expected to stand.

NOTE 1 It is not necessary to reduce the magnetic spill between counter positions below a level comparable with

the acoustic spill. A difference greater than 20 dB between equivalent positions at the two counters is normally

enough.

NOTE 2 The boundaries of the area where people are expected to stand cannot be standardized as they depend

on the building layout and counter design.

NOTE 3 For vertical loops, an offset (shown as l in Figure 3) between the reference point and the position of the

loop promotes evenness of field pattern over the area where people are expected to stand, but reduces the

effectiveness of overspill control to the next counter position.
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SIST EN IEC 60118-4:2015/A1:2018
– 6 – IEC 60118-4:2014/AMD1:2017
IEC 2017
l l
1 2
3 3
l l
4 5
IEC
Key
1 ma
...

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