EN 60118-4:2015
(Main)Electroacoustics - Hearing aids - Part 4: Induction-loop systems for hearing aid purposes - System performance requirements
Electroacoustics - Hearing aids - Part 4: Induction-loop systems for hearing aid purposes - System performance requirements
IEC 60118-4:2014 is applicable to audio-frequency induction-loop systems producing an alternating magnetic field at audio frequencies and intended to provide an input signal for hearing aids operating with an induction pick-up coil (telecoil). Throughout this standard, it is assumed that the hearing aids used with it conform to all relevant parts of IEC 60118. This standard specifies requirements for the field strength in audio-frequency induction loops for hearing aid purposes, which will give adequate signal-to-noise ratio without overloading the hearing aid. The standard also specifies the minimum frequency response requirements for acceptable intelligibility. Methods for measuring the magnetic field strength are specified, and information is given on appropriate measuring equipment (see Annex B), information that should be provided to the operator and users of the system (see Annex C), and other important considerations. This standard does not specify requirements for loop driver amplifiers or associated microphone or audio signal sources, which are dealt with in IEC 62489-1, or for the field strength produced by equipment, such as telephone handsets, within the scope of ITU-T P.370. This third edition cancels and replaces the second edition published in 2006. This edition constitutes a technical revision which includes the following significant technical changes with respect to the previous edition: Addition of Annexes G, H and I where more information is provided about practical considerations and methods of measurement.
Akustik - Hörgeräte - Teil 4: Induktionsschleifen für Hörgeräte - Leistungsanforderungen
Électroacoustique - Appareils de correction auditive - Partie 4: Systèmes de boucles d'induction utilisées à des fins de correction auditive - Exigences de performances système
L'IEC 60118-4:2014 s'applique aux systèmes de boucles d'induction audiofréquences qui produisent un champ magnétique alternatif à fréquence acoustique et destinés à produire un signal d'entrée aux appareils de correction auditive en exploitation avec une bobine d'induction captrice. Dans toute la présente norme, on suppose que les appareils de correction auditive utilisés sont conformes à toutes les parties appropriées de l'IEC 60118. Cette norme spécifie des exigences concernant l'intensité du champ dans les boucles d'induction utilisées à des fins de correction auditive, qui correspond à un rapport signal sur bruit convenable sans surcharge de l'appareil de correction auditive. La norme spécifie également des exigences concernant la réponse en fréquence minimale pour une intelligibilité acceptable. Les méthodes de mesure de l'intensité du champ magnétique et des renseignements sur l'équipement de mesure approprié (voir Annexe B), ainsi que les renseignements qu'il convient de fournir aux opérateurs et aux utilisateurs du système (voir Annexe C) sont donnés, avec d'autres considérations importantes. Par contre, la présente norme ne spécifie pas d'exigences concernant les amplificateurs qui alimentent la boucle, le microphone associé, les sources du signal acoustique, qui sont décrits dans l'IEC 62489-1, ou l'intensité du champ produit par des appareillages tels que les appareils téléphoniques, dans le domaine d'application de la norme UIT-T P370. Cette troisième édition annule et remplace la deuxième édition parue en 2006. L'édition de cette partie constitue une révision technique qui inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: ajout des Annexes G, H et I qui apportent plus d'information concernant des considérations pratiques et les méthodes de mesure.
Elektroakustika - Slušni pripomočki - 4. del: Sistemi z indukcijsko zanko za slušne pripomočke - Zahteve sistema
Ta del standarda IEC 60118 velja 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 poljsko jakost 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 (glejte Dodatek B), informacije, namenjene operaterju in uporabnikom sistema (glejte 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
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Akustik - Hörgeräte - Teil 4: Induktionsschleifen für Hörgeräte - LeistungsanforderungenElectroacoustique - Appareils de correction auditive - Partie 4: Systèmes de boucles d'induction utilisées à des fins - Exigences de performances systèmeElectroacoustics - Hearing aids - Part 4: Induction loop systems for hearing aid purposes - System performance requirements17.140.50ElektroakustikaElectroacoustics11.180.15Aids for deaf and hearing impaired peopleICS:Ta slovenski standard je istoveten z:EN 60118-4:2015SIST EN 60118-4:2015en01-september-2015SIST EN 60118-4:2015SLOVENSKI
STANDARDSIST EN 60118-4:20081DGRPHãþD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 60118-4
February 2015 ICS 17.140.50
Supersedes
EN 60118-4:2006
English Version
Electroacoustics - Hearing aids -
Part 4: Induction-loop systems for hearing aid purposes - System performance requirements (IEC 60118-4:2014)
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)
Akustik - Hörgeräte -
Teil 4: Induktionsschleifen für Hörgeräte - Leistungsanforderungen (IEC 60118-4:2014) This European Standard was approved by CENELEC on 2015-01-15. 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, 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: Avenue Marnix 17,
B-1000 Brussels © 2015 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 60118-4:2015 E SIST EN 60118-4:2015
Foreword The text of document 29/855/FDIS, future edition 3 of IEC 60118-4, prepared by IEC TC 29, Electroacoustics, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60118-4:2015. The following dates are fixed: • latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2015-10-15 • latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2018-01-15
This document supersedes EN 60118-4:2006.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC [and/or CEN] 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 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 61938 NOTE Harmonised as
EN 61938. IEC 61260-1 NOTE Harmonised as
EN 61260-1.
- 3 - EN 60118-4:2015 Annex ZA
(normative)
Normative references to international publications with their corresponding European publications
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here: www.cenelec.eu.
Publication Year Title EN/HD Year IEC 60268-3 2013
Sound system equipment --
Part 3: Amplifiers EN 60268-3 2013
IEC 60268-10 1991
Sound system equipment --
Part 10: Peak programme level meters HD 483.10 S1 1993
IEC 61672-1 2013
Electroacoustics - Sound level meters --
Part 1: Specifications EN 61672-1 2013
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 EN 62489-1 2010
IEC 60118-4 Edition 3.0 2014-12 INTERNATIONAL STANDARD NORME INTERNATIONALE 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 XA ICS 17.140.50 PRICE CODE CODE PRIX ISBN 978-2-8322-1984-3
– 2 – IEC 60118-4:2014 © IEC 2014 CONTENTS FOREWORD . 6 INTRODUCTION . 8 1 Scope . 9 2 Normative references . 9 3 Terms and definitions . 9 4 General . 10 4.1 Procedure for setting up and commissioning an audio-frequency induction loop system . 10 4.2 Suitability of the site for the installation of an audio-frequency induction-loop system . 10 4.3 Relation of the magnetic field strength level at the telecoil to the sound pressure level at the microphone. . 11 5 Using components of a sound system in an induction-loop system . 11 5.1 General . 11 5.2 Microphones . 11 5.3 Mixer . 11 5.4 Power amplifier . 11 6 Meters and test signals . 11 6.1 Meters . 11 6.1.1 Meters in general . 11 6.1.2 Requirements common to both types . 11 6.1.3 True-r.m.s. meter . 12 6.1.4 Peak programme meter (PPM) . 12 6.2 Test signals in general . 12 6.3 Speech signals . 13 6.3.1 Live speech signals . 13 6.3.2 Recorded speech material . 13 6.3.3 Simulated speech material . 13 6.4 Pink noise signal . 13 6.5 Sinusoidal signal . 13 6.6 Combi signal . 14 7 Magnetic background noise level of the installation site . 14 7.1 Method of measurement . 14 7.2 Recommended maximum magnetic noise levels . 15 8 Characteristics to be specified, methods of measurement and requirements . 15 8.1 General . 15 8.2 Magnetic field strength . 16 8.2.1 Characteristic to be specified . 16 8.2.2 Method of measurement with a simulated speech signal . 16 8.2.3 Method of measurement with pink noise . 17 8.2.4 Method of measurement with a sinusoidal signal . 17 8.2.5 Method of measurement with a combi signal . 17 8.2.6 Method of measurement – Other . 17 8.2.7 Requirements . 17 8.3 Frequency response of the magnetic field . 18 8.3.1 Characteristic to be specified . 18 SIST EN 60118-4:2015
IEC 60118-4:2014 © IEC 2014 – 3 – 8.3.2 Method of measurement with a simulated speech signal . 18 8.3.3 Method of measurement with pink noise . 18 8.3.4 Method of measurement with a sinusoidal signal . 18 8.3.5 Method of measurement with combi signal . 19 8.3.6 Method of measurement – Other . 19 8.3.7 Requirements . 19 8.4 Useful magnetic field volume . 19 8.4.1 Characteristic to be specified . 19 8.4.2 Methods of measurement . 19 8.4.3 Requirements . 19 9 Small-volume systems . 19 9.1 Inapplicability of the 'useful magnetic field volume' concept . 19 9.2 Disabled refuge and similar call-points . 20 9.3 Requirements for disabled refuge and similar call-points . 22 9.4 Counter systems . 22 9.5 Requirements for counter systems . 24 10 Setting up (commissioning) the system . 24 10.1 Procedure . 24 10.2 Magnetic noise level due to the system . 24 10.2.1 Explanation of term . 24 10.2.2 Method of measurement with a speech signal . 24 10.2.3 Method of measurement with pink noise . 25 10.2.4 Method of measurement with a sinusoidal signal . 25 10.2.5 Method of measurement with a combi signal . 25 10.2.6 Method of measurement – Other (no input signal) . 25 10.2.7 Requirements . 25 10.3 Amplifier overload at 1,6 kHz . 25 10.3.1 Explanation of term . 25 10.3.2 Methods of test . 25 10.4 Requirements . 25 Annex A (informative)
Systems for
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