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A hearing aid is a sophisticated electroacoustic device worn behind the ear, designed to amplify sound through converting it to electrical signal. There are several types of MD hearing aid. Each of which has distinct power and circuitry. Among the most common hearing instruments in the market today are the body worn aids, behind the ear aids, in the ear aids, in the canal aids and disposable aids. Each one has pros and cons; hence, before one picks out, it is best to consult with an expert audiologist in order not to put one's auditory system definitely at stake.
Body worn aids are the first to hearing instruments ever invented. These were designed by an American physicist, Harvey Fletcher - the father of stereophonic sound. These devices have a case and an ear mold which are attached by a wire. Their cases are about the size of playing cards. They come with several electronic controls, a battery and amplifier devices.
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.
An in the ear or ITE, on the other hand, is also custom-made with a shell that perfectly fits in the outer part of the ear. It can house a typical volume control as well as directional microphone. It is easy to manipulate and inserted. This tends to be a bit bulky, though.
An ITC device is barely noticeable as this is inserted right into the ear canal opening. This is not pricey as the ITE. This is large enough to accommodate the directional microphone. It can be pretty prone to feedback, though.
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 are regulated by the U. S. Food and Drug Administration under the first category of medical devices. Highly industrialized countries typically supply free aids by means of the healthcare programs funded by the government. Also, there are some companies that offer deeply discounted aids but consumers are encouraged not to buy anything immediately if they have still not spoken with their doctors.
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.
Body worn aids are the first to hearing instruments ever invented. These were designed by an American physicist, Harvey Fletcher - the father of stereophonic sound. These devices have a case and an ear mold which are attached by a wire. Their cases are about the size of playing cards. They come with several electronic controls, a battery and amplifier devices.
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.
An in the ear or ITE, on the other hand, is also custom-made with a shell that perfectly fits in the outer part of the ear. It can house a typical volume control as well as directional microphone. It is easy to manipulate and inserted. This tends to be a bit bulky, though.
An ITC device is barely noticeable as this is inserted right into the ear canal opening. This is not pricey as the ITE. This is large enough to accommodate the directional microphone. It can be pretty prone to feedback, though.
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 are regulated by the U. S. Food and Drug Administration under the first category of medical devices. Highly industrialized countries typically supply free aids by means of the healthcare programs funded by the government. Also, there are some companies that offer deeply discounted aids but consumers are encouraged not to buy anything immediately if they have still not spoken with their doctors.
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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