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BS EN 60118-4:2006:2007 Edition

BS EN 60118-4:2006:2007 Edition

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

Published By Publication Date Number of Pages
BSI 2007 44
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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.

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BS EN 60118-4:2006
$167.15