Electroacoustics. Hearing aids Induction-loop systems for hearing aid purposes. System performance requirements

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

30-04-2018

Publisher

British Standards Institution

This part of IEC60118 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 IEC60118.

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 AnnexB), information that should be provided to the operator and users of the system (see AnnexC), 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 IEC62489-1, or for the field strength produced by equipment, such as telephone handsets, within the scope of ITU-TP.370.

Committee	EPL/29
DevelopmentNote	Supersedes & Redesignates BS EN 60118-4. 2015 Edition Re-Issued in April 2018 & incorporates AMD 1 2018. (05/2018)
DocumentType	Standard
Pages	58
PublisherName	British Standards Institution
Status	Current
Supersedes	BS EN 60118-4:2006

Standards	Relationship
EN IEC 60118-4:2015/A1:2018	Identical
IEC 60118-4:2014/AMD1:2017	Identical

HD 483.10 : 200S1	SOUND SYSTEM EQUIPMENT - PART 10: PEAK PROGRAMME LEVEL METERS
IEC 62489-1:2010+AMD1:2014 CSV	Electroacoustics - Audio-frequency induction loop systems for assisted hearing - Part 1: Methods of measuring and specifying theperformance of system components
IEC 61938 : 2.0	MULTIMEDIA SYSTEMS - GUIDE TO THE RECOMMENDED CHARACTERISTICS OF ANALOGUE INTERFACES TO ACHIEVE INTEROPERABILITY
IEC 60268-3:2013	Sound system equipment - Part 3: Amplifiers
IEC 60268-10:1991	Sound system equipment - Part 10: Peak programme level meters
EN 61672-1:2013	Electroacoustics - Sound level meters - Part 1: Specifications
EN 60268-3:2013	Sound system equipment - Part 3: Amplifiers
IEC 61938:2013	Multimedia systems - Guide to the recommended characteristics of analogue interfaces to achieve interoperability
IEC 61260-1:2014	Electroacoustics - Octave-band and fractional-octave-band filters - Part 1: Specifications
IEC 60268-1:1985	Sound system equipment. Part 1: General
TR 101 767 : 1.1.1	HUMAN FACTORS (HF); SYMBOLS TO IDENTIFY TELECOMMUNICATIONS FACILITIES FOR DEAF AND HARD OF HEARING PEOPLE; DEVELOPMENT AND EVALUATION