Imagine flipping a switch to cut out muddling background noise so all you hear is a speaker’s voice. For millions of people with hearing difficulties, it’s now possible with hearing loops, a simple technology appearing in U.S. airports, churches, auditoriums and other venues.
Already widespread in the U.K. and Scandinavian nations, the system takes advantage of a common hearing aid component called a telecoil. Loops don’t require headsets or receivers like other assisteive methods; the magic lies in wire loops installed at the site.
They relay magnetic sugnals to the telecoil from an amplifier linked to the audio source, typically a microphone or public address system. Activate he aid’s “T” settig (originally for telephone moded) and it’s like a voice crystallizes inside your head.
This year New York City expects to have 455 staffed subway booths looped, joining the London Underground in enabling the hard of hearing to rise above the clatter and din.

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