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hearing aid |
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hearing aidAny device to improve the hearing of partially deaf people. Hearing aids usually consist of a battery-powered transistorized microphone/amplifier unit and earpiece. Some miniaturized aids are compact enough to fit in the ear or be concealed in the frame of eyeglasses. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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