A well designed and installed hearing loop system sends the audio signal directly to any hearing aid, cochlear implant, or receiver with a telecoil. No background noise, no reverberation, just clear sound.

How hearing loops work

Hearing loop technology, sometimes known as an audio induction loop systems, audio-frequency induction loops or hearing loops, are an assistive listening technology for individuals with reduced ranges of hearing. 

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Audio inputs, either from an existing audio  system or from dedicated microphone inputs, feed an audio signal into an induction loop  amplifier. 

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The amplifier drives a current into a hidden loop wire or series of loop wires depending on the design of the system.

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Abstract loop wire icon
Abstract loop wire icon
Abstract loop wire icon

 Amplifier 

 Amplifier 

Inside the hearing aid, a small coil, known as a T-coil (tele-coil or telephone coil), picks up the magnetic field signal, which is then amplified into a high quality audio signal delivered directly to the ear of the hearing aid user.

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hearing aid in ear
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As the current flows through the wire it creates a magnetic field in the listening area.

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Abstract magnetic field icon
Abstract magnetic field icon
Abstract magnetic field icon
Abstract loop wire icon
Abstract loop wire icon
Abstract loop wire icon

“Churches put Hearing-Impaired in Loop”, Chicago Tribune, July 3, 2010
Reprinted with permission Alex Bordens and Phil Geib/Tribune

Watch this short video to see how hearing loops works:

Video courtesy of OTOjOY