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What are Assistive Listening Devices
(ALDs)?
You may have certain communication needs that cannot be solved
by the use of hearing aids
alone. These situations may involve the use of the telephone,
radio, television, and the inability to hear the door chime,
telephone bell, and alarm clock. Special devices have been
developed to solve these problems. Like
hearing aids, assistive listening devices make sounds
louder. Typically, a hearing aid
makes all sounds in the environment louder. Assistive listening
devices can increase the loudness of a desired sound (a radio
or television, a public speaker, an actor, someone talking
in a noisy place) without increasing the loudness of the background
noises. This is because the microphone of the assistive listening
device is placed close to the speaker, while the microphone
of the hearing aid is always
close to the listener.
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