• CEI EN 60118-4 : 2016

    Current The latest, up-to-date edition.

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

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  01-01-2016

    Publisher:  Comitato Elettrotecnico Italiano

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

    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)

    Pertains 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).

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

    Committee CT 29/87
    Development Note Classificazione CEI 29-40 (08/2001) Partially supersedes CEI 29-11 (05/2004) 2ED 2007 Edition is valid until 15-01-2018. (05/2016)
    Document Type Standard
    Publisher Comitato Elettrotecnico Italiano
    Status Current
    Supersedes

    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 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
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