![]() The telecoil works by receiving an electromagnetic signal from the hearing loop and then turning it back into sound within the hearing aid or cochlear implant. It also is used with a variety of other assistive listening devices, such as hearing loop (or induction loop) systems, FM systems, infrared systems, and personal amplifiers. It was originally designed to make sounds clearer to a listener over the telephone. For those who don’t have hearing aids with embedded telecoils, portable loop receivers are also available.Ī telecoil, also called a t-coil, is a coil of wire that is installed inside many hearing aids and cochlear implants to act as a miniature wireless receiver. A hearing loop can be connected to a public address system, a television, or any other audio source. Some loop systems are portable, making it possible for people with hearing loss to improve their listening environments, as needed, as they proceed with their daily activities. Because the sound is picked up directly by the receiver, the sound is much clearer, without as much of the competing background noise associated with many listening environments. To pick up the signal, a listener must be wearing the receiver and be within or near the loop. A receiver worn in the ears or as a headsetĪmplified sound travels through the loop and creates an electromagnetic field that is picked up directly by a hearing loop receiver or a telecoil (see sidebar), a miniature wireless receiver that is built into many hearing aids and cochlear implants. ![]()
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