Tactile Sign
Waves

Telecoil
An induction coil in a hearing aid used to pick up signals from a telephone or loop systems.

Threshold
Softest level of intensity at which a person hears a particular sound.

Tinnitus
Noises heard from within the head (e.g., ringing, pulsating, or buzzing).

Tympanic Membrane
See eardrum.

Tympanometry
Testing of the middle ear with equipment that bounces sound off the tympanic membrane under different pressure conditions.