Amplified Truths About Hearing Aids

By Michelle Howe


Hearing aids are highly sophisticated electroacoustic devices that are worn behind the users' ears. These are designed to amplify sounds through having those converted to electrical signals. MD hearing aid comes in different types. Each has specific power and circuitry and among the most popular of these are body worn, behind the ear or BTE, in the ear or ITE, in the canal or ITC and disposal aids. They have distinctive pros and cons; thus, users should only buy in accordance with their audiologists' recommendations or put their auditory system totally at stake otherwise.

The body worn aid is the first of its kind. It was designed and created by Harvey Fletcher, an American physicist referred to as the father of stereophonic sound. Body worn aids have an ear mold and a case that are attached with a wire. The case is about the size of a playing card. It contains several electronic amplifier devices, controls and a battery.

The BTE is made up of a plastic tube which carries sound through a customized ear mold. This has a bigger size making it pretty easy to manipulate. This can last much longer than a small device. It can be incorporated with a directional microphone. The only odd is, it is never easy to hide particularly if a wearer does not have a long hair.

ITE is custom-made too. It has a a shell which perfectly fits the outer ear. It could house a volume control and a directional phone. It can be manipulated and inserted easily as well. It somehow a little bulky in the ear, though.

In the canal or ITC aids are barely noticeable as these are inserted into the opening of the ear canal. These are not priced as much as the ITE but are particularly large enough for the directional microphone. These are also prone to feedback.

The disposable hearing aids have non-replaceable battery. These are intended only for periodic use or on important police investigations where the wearers use them only during operations. These are never too ideal for people who were hearing disorders. However, it is a wise idea to spare one or two for emergency use.

Ordinary devices that are regulated by the Food and Drug Administration are categorized under Class I. Industrialized countries normally give free aids through healthcare program that are funded by the national government. There are some companies offering heavily discounted devices as well but users are cautioned about purchasing anything if they have yet to have personal conversation with their physicians.

People with severe condition are required to have a regular consultation with the audiologist. Necessary adjustments are often required particularly on the microphone and control system. Having done those adjustments without the right knowledge and skill will only result in the device's failure.

An MD hearing aid entails a professional guidance in buying. This is a insensitive device that needs a very careful consideration on several important factors and a series of tests before an individual can purchase one and use.




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