• I.S. EN 60118-4:2015

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

    ELECTROACOUSTICS - HEARING AIDS - PART 4: INDUCTION-LOOP SYSTEMS FOR HEARING AID PURPOSES - SYSTEM PERFORMANCE REQUIREMENTS

    Available format(s):  Hardcopy, PDF

    Superseded date:  23-11-2019

    Language(s):  English

    Published date:  01-01-2015

    Publisher:  National Standards Authority of Ireland

    For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
    Only cited Standards give presumption of conformance to New Approach Directives/Regulations.

    Dates of withdrawal of national standards are available from NSAI.

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    Table of Contents - (Show below) - (Hide below)

    National Foreword
    FOREWORD
    INTRODUCTION
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 General
    5 Using components of a sound system in an induction-loop
       system
    6 Meters and test signals
    7 Magnetic background noise level of the installation site
    8 Characteristics to be specified, methods of measurement
       and requirements
    9 Small-volume systems
    10 Setting up (commissioning) the system
    Annex A (informative) - Systems for small useful magnetic
            field volumes
    Annex B (informative) - Measuring equipment
    Annex C (informative) - Provision of information
    Annex D (informative) - Measuring speech signals
    Annex E (informative) - Basic theory and practice of audio-frequency
            induction-loop systems
    Annex F (informative) - Effects of metal in the building structure
            on the magnetic field
    Annex G (informative) - Calibration of field-strength meters
    Annex H (informative) - Effect of the aspect ratio of the loop on
            the magnetic field strength
    Annex I (informative) - Overspill of magnetic field from an
            induction-loop system
    Bibliography
    Annex ZA (normative) - Normative references to
             international publications with their
             corresponding European publications

    Abstract - (Show below) - (Hide below)

    Defines 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.

    General Product Information - (Show below) - (Hide below)

    Development Note For CENELEC adoptions of IEC publications, please check www.iec.ch to be sure that you have any corrigenda that may apply. (01/2017)
    Document Type Standard
    Publisher National Standards Authority of Ireland
    Status Superseded
    Superseded By

    Standards Referencing This Book - (Show below) - (Hide below)

    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 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
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