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Aural Rehabilitation Exam 2 Practice Test

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What component in hearing devices picks up the magnetic field generated by hearing loops?
Correct Answer:
Telecoils
Explanation:
Telecoils are designed to pick up the magnetic field produced by hearing loop systems. In a loop, current in the wire creates a magnetic field around the room. The telecoil, a tiny coil inside many hearing aids or cochlear implants, senses that magnetic field and converts it into an electrical signal that the device can process and deliver to you as sound. This setup helps minimize background noise because the microphone isn’t capturing ambient acoustics, just the loop’s magnetic signal when telecoil mode is on. The microphone, by contrast, is for picking up environmental sound; the amplifier boosts signals that the device already has, and the battery provides power. So the component that retrieves the loop’s magnetic field is the telecoil.

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