This from Cronkite News.
…these places have created an electro-magnetic loop with wire around the perimeter of the room, connected to an amplifier and the public address system. When a person with a hearing aid flips a tiny switch to the telecoil setting, he or she can hear what’s being said into the microphones without any background noise.
Here’s the link to the page:
This appears to use inductive technology – the same concept that makes a transformer work. Essentially, the building in which you’re sitting becomes the primary winding, and the coil in your hearing aid, the secondary.
It represents a major step forward in providing access to HoH individuals who can benefit from hearing aids.
- Leading New England Audio Visual Company Releases Whitepaper About Hearing Loop Installations (prweb.com)
- Do You Need Hearing Aid Batteries? Pearl Feder Wants to Help You (lipreadingmom.com)
- Just Be Glad You Don’t Have To Carry This Around (deafinprison.wordpress.com)