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Saturday, May 7, 2011
Hearing Aids Working
All hearing aids have a few features in common. First, each hearing aid has a microphone to pick up sounds and convert the sound waves into electronic signals. Next, the signals are sent to an amplifier, which magnifies, or increases the volume of the signals. Finally, the signals are sent into the ear through a speaker. The other component that all hearing aids have in common is a battery that powers the device.
Hearing Aids use either analog or digital technology to magnify sound. Basic analog technology increases the volume of all sounds equally. In practice, this means that loud sounds may require a manual volume adjustment in the hearing aid, so basic analog hearing aids work best for people who use them in relatively quiet situations.
Let us start our tour of Hearing Aids Working by looking at the human ear itself.Sound travels through the air in waveforms, and these are gathered in by the ear and altered, before being sent to our brains to be interpreted. That is their purpose in life, so now let’s see how the ears achieve their goal.For this, the ear is divided up into three different parts; the outer ear, the middle ear, and the inner ear.
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