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IEC 60118-4

Electroacoustics – Hearing aids – Part 4: Induction loop systems for hearing aid purposes – Magnetic field strength

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Organization: IEC
Publication Date: 1 October 2006
Status: inactive
Page Count: 90
ICS Code (Electroacoustics): 17.140.50
scope:

This international standard 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.

The 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.

The standard does not specify requirements for loop driver amplifiers or associated microphone or audio signal sources, or for the field strength produced by equipment, such as telephone handsets, within the scope of ITU-T P.370.

Document History

November 1, 2017
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...
November 1, 2017
AMENDMENT 1 Electroacoustics – Hearing aids – Part 4: Induction-loop systems for hearing aid purposes – System performance requirements
A description is not available for this item.
December 1, 2014
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...
IEC 60118-4
October 1, 2006
Electroacoustics – Hearing aids – Part 4: Induction loop systems for hearing aid purposes – Magnetic field strength
This international standard 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...
January 1, 1981
Hearing Aids - Part 4: Magnetic Field Strength in Audio-Frequency Induction Loops for Hearing Aid Purposes
A description is not available for this item.
January 1, 1981
Methods of Measurement of Electro-Acoustical Characteristics of 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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