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About This Item
Full Description
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.
Cross References:
EN 60268-3:2013
IEC 60268-10:1991
HD 483.10 S1:1993
IEC 62489-1:2010
EN 61672-1:2013
IEC 60268-3:2013
IEC 61672-1:2013
EN 62489-1:2010
IEC 61938
IEC 61260-1
ETSI TR 101 767
ITU-T Recommendation P.50
ITU-T Recommendation P370
BS 7594:2010
EN 61938
IEC 60268-1
EN 61260-1
Incorporates the following:
Amendment, April 2018
Document History
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BS EN IEC 60118-4:2015+A1:2018
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Electroacoustics. Hearing aids-Induction-loop systems for hearing aid purposes. System performance requirements- Most Recent
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BS EN 60118-4:2015
Electroacoustics. Hearing aids. Induction-loop systems for hearing aid purposes. System performance requirements- Historical Version
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BS 12/30264220 DC
BS EN 60118-4. Electroacoustics. Hearing aids. Part 4. Induction loop systems for hearing aid purposes. System performance requirements- Historical Version
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BS EN 60118-4:2006
Electroacoustics. Hearing aids-Induction loop systems for hearing aid purposes. Magnetic field strength- Historical Version
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BS EN 60118-4:1998
Hearing aids-Magnetic field strength in audio-frequency induction loops for hearing aid purposes- Historical Version
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BS 6083-4:1981
Hearing aids-Specification for magnetic field strength in audio-frequency induction loops for hearing aid purposes- Historical Version