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Buyer’s Guide to Telecoil in Digital Hearing Aids If you’re using or interested in purchasing a hearing aid with a telecoil function, you might be wondering about what it does. As its name suggests, a telecoil is a small coil of wire. It sounds simple, but it greatly improves the functionality of your hearing aid. Read on to get a solid idea of what this simple device can offer you. A hearing aid with a telecoil can pick up on magnetic signals. Conventional microphones and amplifiers in hearing aids boost all the sounds that they encounter, but a telecoil only transfers magnetically created sounds. Initially, the number one use for this function was to better hear phone conversations. The speakers in older telephone handsets included strong magnets. The telecoil-enabled hearing aid could therefore offer a clear transmission of only those sounds coming through the telephone. Newer phones no longer use magnets in this way. But, because the telecoil feature is so popular among hearing aid users, many contemporary phones contain supplemental electronics to make them telecoil compatible. The use of telecoils started with the phone, but now they are utilized in many ways. Theaters, train stations, auditoriums and stadiums often use them as part of their Assistive Listening Systems. The venue might loan you a receiver or headset that will assist your hearing aid in picking up these signals. Users often say that the clarity of the sound they acquire magnetically is superior to the sound quality transmitted through the air acoustically. The way you use your telecoil will vary depending on the size, age and type of

 

   

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your hearing aid. This function is more common in larger hearing aids, including those that rest behind the ear. Older hearing aids can be switched between telecoil and non-telecoil modes using a physical switch on the device. Digital hearing aids will have programs for telecoil and microphone modes. Switching between modes might be achieved by pressing a button on the hearing aid or on a remote. Interference can be an issue when using a telecoil, but it is generally rare. The interference generally originates from fluorescent lights in the room or equipment such as CRT monitors. It will sound like buzzing, which gets louder as you get closer to the origin of the interference. The occasional interference is the only disadvantage to telecoils. They are really wonderful upgrades that offer many added benefits. This technology is an affordable way to enhance the capabilities of your hearing aid.