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CENELEC - EN IEC 60118-4

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

active, Most Current
Organization: CENELEC
Publication Date: 1 February 2015
Status: active
Page Count: 58
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

EN IEC 60118-4
February 1, 2015
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...
February 1, 2015
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...
December 1, 2006
Electroacoustics - Hearing aids Part 4: Induction loop systems for hearing aid purposes - Magnetic field strength
Gives a standard value of magnetic field strength in audio-frequency induction loops for hearing aid purposes that will give an adequate signal-to-noise ratio without overloading the hearing aid.
August 1, 1998
Hearing Aids Part 4: Magnetic Field Strength in Audio-Frequency Induction Loops for Hearing Aid Purposes
A description is not available for this item.

References

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