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A hearing aid is a device used to help hard-of-hearing people hear sounds better. In the past, a funnel-like amplification cone, called an "ear trumpet" or "ear horn", was used. Also sometimes used was a desk with a built-in amplifier into which a microphone and earphones could be plugged; these worked better than passive ear trumpets but were not portable.
Now, however, the most common style is a small electronic device that fits into the wearer's ear. The first variety of this device had a rectangular battery pack connected by a thin wire, intended to be held in a pocket. Such "body aids," though much more portable than the desk type, still suffered significant disadvantages due to sub-optimal microphone placement. Since the microphone was not near the user's head, it was susceptible to interfering sounds such as clothing-noise. Sound input was also distorted if the microphone was located below the mouth of a person with whom the user was conversing.
During the mid- to late 20th century, hearing aids that were carried in pockets were replaced by a more inconspicuous sort of model in which small zinc-air batteries were placed in the inserted unit itself.
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Hearing Aids :: Hearing and Listening Aids
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stocktradernews (Barry Cooper) Tue, 03 Nov 2009 20:47:00 -0000
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LeaseManagement (Prof. Maclin) Tue, 03 Nov 2009 20:42:40 -0000
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StructuredSet (Settlement) Tue, 03 Nov 2009 20:40:24 -0000
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gus hates geometry and got in trouble at school. he took his hearing aids out - so he didnt have to hear!! he comes from hardheadville.metoo
Ali_Allison (Ali Allison) Tue, 03 Nov 2009 20:38:41 -0000
gus hates geometry and got in trouble at school. he took his hearing aids out - so he didnt have to hear!! he comes from hardheadville.metoo
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IRSLawyer (IRS Lawyer) Tue, 03 Nov 2009 20:36:56 -0000
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@DawnSandomeno I paid OOP for hearing aids $6K total, TG for my credit card which is now maxed! Ins would not TOUCH it! #strollerbrigade
sneakpeekatme (Sneak Peek) Tue, 03 Nov 2009 19:40:04 -0000
@DawnSandomeno I paid OOP for hearing aids $6K total, TG for my credit card which is now maxed! Ins would not TOUCH it! #strollerbrigade
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Hear And Go - Offering hearing aids developed for people who need a little extra help with their hearing.
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Hearing Aids Online - Presents most major brands of behind the ear (BTE) hearing aids.
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Hearing-Aid-Site.com - Features sales of hearing aids and batteries, 24 hour shipping is available.
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Lakin Engineering - Electric dryers that reduce moisture and wax in hearing aids.
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Lifetime Hearing Aids - Offers hearing aids, service, and repairs. Based in Louisiana.
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Lloyds - Offers all styles of hearing aids as well as batteries and repairs.
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Sonus - Offers online hearing aids and batteries, nationwide clinics for the hearing impaired, a network of audiologists, dispensers and physicians, and the Sonus Hearing Institute research facility. Information on hearing loss.
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Sound Device 002 - Tiny, affordable device for people with moderate hearing loss.
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