AARP: Hearing Aids in the Loop

A thin strand of copper wire installed around the edge of a room has transformed the lives of millions of Americans who wear hearing aids.

Called a hearing loop, it can bring crystal clear hearing in public spaces — including theaters, churches, museums, airports and even the U.S. Supreme Court — to those with hearing aids equipped with a telecoil. The telecoil, or T-coil, is a tiny copper coil receiver automatically built into more than two-thirds of today’s hearing aids and in all cochlear implants.

http://www.aarp.org/health/conditions-treatments/info-06-2010/health_discovery_hearing_aids_in_the_loop.html