T-Loop

The Induction Loop also known as Hearing Loop or T-Loop is an assistive listening system that provides access to facilities for those with a hearing impairment.

It takes the sound straight from the source and deliver it directly to the hearing aid or the receiver via induced magnetic field.  It’s as if one’s head was located in the microphone, or inches from a television’s loudspeaker without extraneous noise, or blurring of the sound with distance from the sound source.