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A frequency-modulated (FM) system is an ALD that makes it easier for people with hearing loss to hear what others are saying in noisy environments, like a theater, school, church, museum or other public places.

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Closed captioning is commonly seen on most TV shows and movies available now.  Captions appear with the use of a closed-caption decoder or decoder chip built into the TV.

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A device that connects to a doorbell, telephone, or alarm that emits a loud sound or blinking light to let someone with hearing loss know that an event is taking place.

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A hearing aid is a small electronic device that you wear in or behind your ear. It makes some sounds louder so that a person with hearing loss can listen, communicate, and participate more fully in daily activities.

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A cochlear implant is a small, complex electronic device that can help to provide a sense of sound to a person who is profoundly deaf or severely hard-of-hearing. The implant consists of an external portion that sits behind the ear and a second portion that is surgically placed under the skin.