PDA Range VL1, Инструкция по эксплуатации

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Approved document No. DCM0003479 Rev 1 • Page 3 of 8
WHAT IS AN AUDIO-FREQUENCY INDUCTION LOOP SYSTEM?
An audio-frequency induction loop system allows hearing impaired
people to hear more clearly. Most hearing aids have a ‘T’ or ‘MT’ switch
which allows them to pick up the electromagnetic field generated by an
induction loop system. The hearing aid converts this signal into a sound
suited to its user’s specific hearing requirements. Any hearing impaired
person positioned within or near the loop can hear the loop signal by
switching their hearing aid to the correct position, allowing them to participate more
effectively in general conversation, ordering goods or services, etc.
An induction loop system therefore comprises four main elements:-
The audio source – typically a microphone or a music source (or both).
The induction loop amplifier
The loop – typically a single turn of wire run around the perimeter of the area
requiring coverage or, on smaller systems, a special pre-formed loop fixed to a flat
surface.
The receiver(s) – any behind-the-ear type hearing aid with a ‘T’ or ‘MT’ switch.