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Normas BSI – AENOR
BS EN 60118-4:2006

BS EN 60118-4:2006

Electroacoustics. Hearing aids. Induction loop systems for hearing aid purposes. Magnetic field strength

Fecha Anulación:
2015-02-28 /Withdrawn
Comité:
EPL/29
Equivalencias internacionales:

EN 60118-4:2006

IEC 60118-4:2006

IEC 60819-1:2009

Relación con otras normas BSI:

Reemplazada por: BS EN IEC 60118-4:2015+A1:2018

Reemplaza a: BS EN 60118-4:1998

Resumen:
Applies 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.
Keywords:
Frequency response, Audiofrequencies, Signal-to-noise ratio, Acoustoelectric devices, Noise (spurious signals), Hearing aids, Magnetic field strength, Audio-frequency induction-loop systems, Signal transmission, Magnetic devices, Magnetic field measurement, Acoustics
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