How Do Induction Loops Work?

An audio induction loop system consists of a loop of wire that is connected to an induction loop amplifier. An input signal is provided to the induction loop amplifier via microphone or direct cable input. The induction loop amplifier drives this signal through the loop of wire in the form of a strong alternating current. This current creates a magnetic field around the wire which is picked up by any telecoil equipped hearing aid positioned inside the loop of wire. The hearing aid must be switched into a “telecoil only” or “microphone plus telecoil” mode to pick up the signal. The loop is a wire which is placed around the perimeter of the room or around any other area in which the creation of the magnetic signal is desired.

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