Here's Relief - Hearing Aids Inside Out [NOOK Book]

Overview

It is estimated that more than 28 million Americans are hard of hearing.

For most, a hearing aid is the appropriate solution. A hearing aid is a device that helps someone who has trouble hearing. Hearing aids today are electronic instruments that receive and amplify sounds.

The earliest hearing aids ...
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Here's Relief - Hearing Aids Inside Out

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Overview

It is estimated that more than 28 million Americans are hard of hearing.

For most, a hearing aid is the appropriate solution. A hearing aid is a device that helps someone who has trouble hearing. Hearing aids today are electronic instruments that receive and amplify sounds.

The earliest hearing aids were usually cone-shaped devices that funneled sound towards the ear in order to amplify it. All hearing aids consist of a microphone or receiver to pick up sound waves and convert them to an electric signal.

This signal is then processed and sent to a speaker, which converts it back to an audio signal. The processing serves to amplify those frequencies of which the user has trouble hearing.

There two types of hearing loss are conductive hearing loss and sensorineural hearing loss. Conductive hearing loss occurs when sound waves cannot reach the inner ear and are caused by something like a buildup of earwax, infection, fluid in the ear, or a punctured eardrum.

Sensorineural hearing loss occurs when there is damage to the auditory nerve or hair cells in the inner ear. Conductive hearing loss is usually corrected by surgery. Sensorineural hearing loss is usually corrected with a hearing aid.
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Product Details

  • BN ID: 2940013622265
  • Publisher: Caring & Sharing
  • Publication date: 8/27/2011
  • Sold by: Barnes & Noble
  • Format: eBook
  • Pages: 112
  • Sales rank: 1,335,995
  • File size: 5 MB

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