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Hearing aid audiology is the study and treatment of hearing impairment, using devices called hearing aids to improve individual's hearing. This branch of medical science is usually practiced by Ear, Nose & Throat (ENT) specialists. Audiologists can work with ENT's or alone, and also study and treat people with hearing loss. Using a variety of testing, audiology determines whether someone can hear within the normal range, and if not, which portions of hearing, high, middle, or low frequencies, are affected. Early hearing aids consisted of funnel-like amplification cones called “ear trumpets” or “ear horns.” Today the most common hearing aid is a small electronic device that fits into the user's ear.
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