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CEI EN 60118-4

Electroacoustics - Hearing aids Part 4: Induction-loop systems for hearing aid purposes - System performance requirements

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Organization: CEI
Publication Date: 1 April 2016
Status: active
Page Count: 60
ICS Code (Electroacoustics): 17.140.50
scope:

This part of IEC 60118 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.

Document History

May 1, 2018
Electroacoustics - Hearing aids Part 4: Induction-loop systems for hearing aid purposes - System performance requirements
FOREWORD This amendment has been prepared by committee IEC technical committee 29: Electroacoustics.
CEI EN 60118-4
April 1, 2016
Electroacoustics - Hearing aids Part 4: Induction-loop systems for hearing aid purposes - System performance requirements
This part of IEC 60118 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...
April 1, 2007
Electroacoustics - Hearing aids - Part 4: Induction loop systems for hearing aid purposes Magnetic field strength
Si applica ai sistemi con circuiti ad induzione in audiofrequenza che producono un campo magnetico alternato e hanno lo scopo di fornire un segnale di ingresso per le protesi acustiche funzionanti...
September 1, 1999
Protesi acustiche - Parte 4: Intensità dei campi magnetici per circuiti ad induzione in audiofrequenza per protesi acustiche
Si applica ai sistemi con circuiti ad induzione in audiofrequenza che producono un campo magnetico alternato e hanno lo scopo di fornire un segnale di ingresso per le protesi acustiche funzionanti...

References

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