telecoil


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telecoil (T-coil),

(tel'ĕ-koyl),
An induction coil in a hearing aid for receiving electromagnetic signals from a telephone or a loop amplification system.
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A new Ohio State University survey finds that 48 percent of new American hearing aids now come with telecoils, which some people call their "telephone coil" (because it also receives magnetic signals from today's hearing aid-compatible phones, enabling clearer, stronger sound).
The electric current that flows through the loop creates an electromagnetic field that can be received and then amplified by a hearing aid equipped with a telecoil (T-Coil) or telephone switch (Lederman & Hendricks, 1995).
Because of their small size, canal aids may be difficult for the user to adjust and remove, and may not be able to hold additional devices, such as a telecoil. Canal aids can also be damaged by earwax and ear drainage.
When turned on, it radiates an electromagnetic signal that can be picked up by tiny receivers, called "telecoils," built into many hearing aids.
Their slightly larger size makes it possible to package some extra technology, such as dual-microphone systems and telecoils.
Using the telecoil, telephone enhancements of one kind or another, a television listening system, and speechreading as much as possible are all going to be helpful.
Siemens Hearing Instruments has enhanced its Switchless[TM] T-coil (Telecoil) to provide greater sensitivity, allowing patients to use the telephone in conjunction with their hearing instrument automatically, without manual adjustments.
Group visits were discontinued during the transition to digitally programmable technology in the late 1990s because of the increased complexity of hearing aid programming and varying wearer options (e.g., multimemories with or without memory button, directional microphone, remote control, and switchless telecoil).
Suitable for mild through severe hearing loss, this instrument also offers trimmer-controlled fitting with no programming unit required, enhanced signal dynamics through digital signal processing, standard manual volume control (except CIC model), standard audible signal indicators for low battery, and optional telecoil (available on ITE and ITC models).
Suitable for mild through severe hearing loss, it offers the following benefits: trimmer-controlled fitting, with no programming unit required; enhanced signal dynamics through digital signal processing; standard manual volume control (except CIC model); standard audible signal indicators for low battery power; and optional telecoil (available on ITE and ITC models),