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hearing
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hearing

Ability to perceive sounds. In humans, the organ of hearing is the ear. Humans are unable to hear sounds that have frequencies below 20 Hz or above 20 kHz. Between these two values is our hearing or audible range. The exact width of our audible range varies from person to person, but in general as we age the range narrows. Some animals such as dogs, dolphins, and bats can hear sounds beyond the human audible range. Sounds with frequencies above 20 kHz are called ultrasounds.
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``He has been training the last year to be a hearing dog and is doing great,'' Matt said.
LOST DOG WAS ANSWER TO HEARING LOSS by Daily News (Los Angeles, CA)
And while I've heard that a hearing dog would alert us to any crying the baby makes, we can't afford one.
The sound of love: my life as a deaf mother by Colclasure, Dawn / Mothering
Suddenly, Sue and her hearing dog, Levi, are "G-men," involved with a lot more action than they bargained for and working on high profile cases.
PAX TV Confirms Back-Nine Episode Order of Hit Freshman Series `Sue ... by Business Wire
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