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Hearing Aids - Know how it works.

Sep 17, 2008
While our advanced hearing aids have indeed been around for literally decades, the origins of the devices can be traced to a conical object that needed to be held up to the ear manually. Far from being very convenient, the original funnel shaped devices did work, however and they achieved this by directing the sound into the ear. It's probably a given that many people know that contemporary hearing devices have a much higher degree of technology, but not everyone truly understands how they work.

The way that hearing aids work is by increasing the small sounds outside the ear with the help of tiny microphones inside the aids. The first step is that those devices alter the sound currents into an electrical or digital signal. The exact settings for the microphones will depend upon the degree of a person's hearing loss and their typical environment.

Environment here refers to how much and what kind of noise you are usually around. For example, a person will have greatly different needs if they are in a high frequency environment versus if they are in a constant quiet conversation environment. These different factors will help your audiologist adjust the settings on your device but this is only part of the answer as to how they work.

For hearing aids, there are three essential types of hearing aids that help to receive and convert the signals. The analog adjustable is both the least expensive type of technology and the least advanced. This type can easily be adjusted by your audiologist. After the factory custom makes it for you, you will have the option to control the volume manually or automatically.

Another type of circuitry found in a hearing aid is called analog programmable. As the name suggests, the analog programmable is the type of device that can be programmed by a computer, unlike the analog adjustable. The audiologist does the initial programming, selecting a variety of sound capture and transmission types that would appropriate in different situations.

Depending on the situation they are in, the user can simply select which program to use by remote control. The most advanced and most expensive models are digital programmable devices. In the past, they were alternately impossible and too big to be practical but this has changed in recent ears.

Hearing aids contain a feature called DSP which stands for Digital Sound Processing. Before the sound is amplified in the ear, it is examined and processed through a computer chip. The classification and identification of billions of digital number codes allows the device to give them correct settings. This digital data is then converted into sound and sent on to the ear. For most, the greatest benefit these digital modes provide is that they protect from the frequency of feedback and most times, very little is needed to be done by the person wearing the aid to help in this process as it is automatic.

In recent years, hearing aids have increased dramatically. If you need help hearing, you have a variety of options available. Hearing aids are a very important device that works through the aid of technology.
About the Author
The author writes health related articles and in his website Remedies for Tinnitus, among other things he has mentioned about the symptoms for Tinnitus, causes and medical treatment.
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