What You Need to Know about Hearing Aids

What You Need to Know about Hearing Aids

by Ray Caran

NOOK Book(eBook)

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Overview

What You Need to Know about Hearing Aids by Ray Caran

Hearing aids have been around for decades. The first hearing devices were just conical devices that you held up to your ear so that a person could speak into them. This would funnel the sound directly into your ear.

Now there are more impressive types of hearing aids, working with a higher degree of technology. So, in modern times, how do hearing aids work?

Product Details

BN ID: 2940012306647
Publisher: Ray Poirier
Publication date: 02/17/2011
Sold by: Barnes & Noble
Format: NOOK Book
File size: 87 KB

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