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Induction Loops

An induction loop is basically a coil of wire that surrounds an area in which people with hearing loss will be located. Loops are typically installed under the carpet or around the tops of the walls of a room, where they meet the ceiling. The loops are attached to an amplifier, which is fed by a sound source - a microphone, radio, or whatever the users want to hear. 

Users switch their hearing aids to activate the telecoil (T-coil), and the signal in the induction loop activates the telecoil to transmit the sound to the hearing aid. This is the same method that is used to enable people with hearing loss to use their telecoils to hear on the phone; the difference is that the loop used to drive the hearing aid telecoil is a lot bigger than the one in a phone.

A loop is a great assistive device for people who have enough residual hearing to be able to use it. Many lecture halls, theaters and meeting rooms have loops installed. And they're becoming increasingly common in people's homes.

Looking for a looped facility near you?

For additional information, or to purchase an assistive listening device, see:

bulletshopping for an assistive listening device
bulletgeneral stores for people with hearing loss

There's a growing movement in the US to greatly increase the locations that provide loops. Read all about Let's Loop America!

Interested in where loops are or should be installed?

November 2001 - Interested in a simple and inexpensive group assistive listening device that's very effective? Perhaps an audio loop is what you're looking for. Here's a bunch of great information from the 2001 SHHH Convention Audio Loop Panel.

May 2003 - If you're interested in the science of induction loops, here's a great article that explains it all, complete with figures, graphs, and equations!

August 2003 - Here's a powerful story from Denise Portis on watching TV using a loop system.

October 2004 - Here's David Myers' update on induction loops.

January 2005 - David Myers reports that half of hearing aids sold in the US now come with telecoils!

January 2006 - I recently sat surrounded by several hundred others in London's Gatwick Airport departure lounge, straining to hear announcements about my delayed flight. Alas, the loudspeaker sound was too distant and foggy for my hard-of-hearing ears. But hold it. This was the United Kingdom, a country whose cathedrals, churches, and auditoriums now broadcast sound wirelessly to hearing aids. . . . Knowing all this, at the airport I turned my hearing aids to their T setting. Voilą! Suddenly I was hearing announcements broadcast from inside my ears.  Full Story

August 2006 - In a looped America, hearing aids would be twice as valuable

December 2006 - Grand Rapids airport to help hearing impaired

January 2007 - Looping America - One Community at a Time

February 2007 - Looping system in public rooms improves hearing

February 2007 - Leeds Advocates Encourage Businesses to Install and Maintain Loops

March 2007 - Keeping Everyone in the Loop!

August 2007 - Let's bring New Mexico into hard-of-hearing loop

November 2007 - Hearing Aids Alone Won't Do the Trick

January 2008 - Induction Loop Basics for Houses of Worship

April 2008 - More Praise for Induction Loops

June 2008 - Michigan Airport Announces New Hearing Loop System

June 2008 - Looping of New York Taxis is Underway

July 2008 - Induction Loop Makes HOA Meetings Accessible

August 2008 - Looped Movie Theater - Is That a Great Idea or What?

August 2008 - New Zealand Airport installs induction loop!

September 2008 - We've Looped West Michigan. Could We Loop America?

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The Science Behind Induction Loops

May 2003

I realize that this article will only appeal to the technogeeks (like me) in our audience. It's a very thorough and complete explanation of how induction loops work - complete with graphs, charts, and equations. The paper is written by Leon Pieters, who is the Managing Director of Ampetronic, a company that designs and installs these systems. Leon says, "You will need pencil, paper and a strong Cappuccino to understand this." He's right!

Point your browser to http://www.dt4u.com/dtsystems/looptech.htm

Thanks to Bob MacPherson of bhNEWS for the lead on this site.

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In a looped America, hearing aids would be twice as valuable

 

August 2006

 

"Imagine a future where hearing aids serve not only as sophisticated microphone amplifiers, but also as customized, in-the-ear loudspeakers for the binaural broadcast of television, a PA system, and telephone sound. In the United Kingdom, and now in part of Michigan, this imagined future is fast becoming reality. "Might the combined efforts of hearing professionals, the hearing industry, and people with hearing loss enable hearing id-compatible assistive listening to spread across this nation- to the betterment of hard-of-hearing consumers and those who serve them?" Full Story

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Looping America - One Community at a Time

January 2007

An inexpensive and unobtrusive system called the "loop" can solve these inconveniences and allow patients to improve the quality and comfort of day-to-day interactions that most people take for granted. Any person that walks into a looped home or venue can put their hearing aids in the T-coil position and receive the crisp, clear binaural broadcast of a private speaker system, television, PA system or telephone sound. Full Story

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Leeds Advocates Encourage Businesses to Install and Maintain Loops

February 2007

CAMPAIGNERS in Leeds want to make communication easier for more than 100,000 people in the city who are hard of hearing. They say a hearing loop should be available in all shops, eateries, businesses and public buildings. The Leeds Society for Deaf and Blind People is campaigning with the Hard of Hearing Forum to make the induction loop, which is connected to an amplifier, accessible for all.  Full Story

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Let's bring New Mexico into hard-of-hearing loop

August 2007

Sometimes people with hearing loss just don't appear to be with it. That's not because they're looped - it's because where they are is not looped, and they can't hear. For the hard of hearing, "looped" means a place with an induction loop system that transmits a silent, electromagnetic signal to the telecoil in their hearing aids. It's a technology widely used in Great Britain and elsewhere in Europe. Loop technology is now taking hold in America, including here in Albuquerque. At many local places, hard-of-hearing people can hear church services or meeting proceedings - or a TV with the volume turned down low. They can even talk hands-free on their cell phones.  Full Story

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Induction Loop Basics for Houses of Worship

January 2008

Because of the huge variety in age and construction of various types of houses of worship, the installation of modern induction-loop technology into those facilities is a continuously diverse challenge. But before we examine loop systems, it is fundamental to consider what constitutes hearing loss and the effect that can have on a person's day-to-day life. Suffering from hearing loss can be a traumatic and isolating experience because it reduces the ability to understand what you are hearing, particularly speech. Initially, it becomes difficult to distinguish the sounds that you want to hear from surrounding background noise. Then, as hearing loss advances, you lose your ability to hear the high-frequency sounds that make speech intelligible - and it becomes muffled, incoherent, and impossible to understand. This can change a person's life dramatically, and it can become impossible to interact normally with other people, either socially or in public places.  Full Story

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More Praise for Induction Loops

April 2008

It seems simple enough: Give people who wear hearing aids a WiFi-style boost that allows them to hear their TV sets without blasting other people out of the room. The technology - an induction loop system - is in wide use in northern Europe but has barely made a blip in the United States, where 31 million people have impaired hearing. Now a Sacramento audiologist is working on changing that. Julia Tanner, who practices in the Campus Commons area, says her patients love the system she has pushed for more than a year. "Even with a mild hearing loss, which is getting more and more common as we age, hearing something that's across the room clearly is difficult," Tanner said. "As soon as we start introducing other things into the room - an air conditioner or fan noise - that's competing with the TV. ... Anything over eight to 10 feet away, the hearing aid doesn't really pick up." Virgil Petrocchi, who is 92, has had his TV room "looped" for the past eight months. "It's the greatest thing that's ever happened," said the Sacramento resident. "We're both (he and Faye, his wife of 68 years) hard of hearing, and it just works wonderfully."    Full Story

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Induction Loop Makes HOA Meetings Accessible

July 2008

Korra and Omer Olson hadn't attended homeowners association meetings at their Spokane Valley retirement community in several months for a simple reason: Both are hard of hearing and they couldn't make out what people were saying. That changed about three months ago when the community center at Good Samaritan Village installed an "induction loop" system. Basically, wire runs around the room's perimeter, hidden behind crown molding, and connects to an amplified microphone. The system emits signals to specially equipped hearing aids, enabling users to hear clearly what's being said. Korra Olson's hearing aids are equipped with the tiny wires called telecoils, but her husband's are not, so he spent $150 on a headset designed to work with the system.  Full Story

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Looped Movie Theater - Is That a Great Idea or What?

August 2008

Dallas Adolphsen will be able to hear the dialogue of his favorite movies better than ever at Traverse City's State Theatre -- thanks to the donation of an induction loop system to the landmark cinema. Adolphsen, who has had a cochlear implant for five years, was on hand Saturday as fine tuning of the system that provides more distinct, audible sound in public settings allowed him to clearly hear the voice of Robin Williams and the sound of hoof beats in a favorite film, "Jumanji". "I could hear them. The sounds were much more distinct and clearer," said Adolphsen, of Traverse City, noting that dialogue, music and background noise were often jumbled when he tried to take in a film at a public theater. He indicated that the problem has been greatly minimized with the induction loop. Acquiring the InfoLoop induction loop system for the State Theatre was spearheaded by Traverse City doctors of audiology Sandra Leahy and Kathleen Sawhill who, along with Richard McKinley of Contacta Inc of Zeeland, donated the plan, equipment and installation of the system that transmits a movie's sound directly to cochlear implants and hearing aids equipped with a telecoil switch.  Full Story

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We've Looped West Michigan. Could We Loop America?

September 2008

Picture two worlds, and ask-which one you would prefer? And, which do you suppose most of America's 31.5 million people with hearing loss would prefer? World One offers assistive listening that is hearing aid incompatible. It requires you, and those who are less open about their hearing loss, to take the initiative when entering public venues to locate and check out special equipment, to remove your hearing aids, to wear either ear buds that have been in others' ears or a conspicuous headset, and then afterwards, to replace the hearing aids and return the assistive unit. World Two offers assistive listening that is hearing aid compatible. It requires nothing more than pushing a hearing aid button, whereupon it becomes an in-the-ear loudspeaker that broadcasts sound customized for your own ears. World One describes most of the United States. World Two describes 21st century Britain, Denmark (a world center for hearing technology), and increasingly Australia.  Full Story