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.
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.
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.
Disposable hearing aids come with non-replaceable batteries. Such devices are designed simply for periodic use as well as for critical police investigation where a wearer only uses the device during the operation. People born with hearing disorder are advised to opt for these. However, it is a very good idea to spare at least one or two so as to something to use during emergencies.
Ordinary aids are regulated by the Federal Food and Drug Administration under Class I of medical devices. Industrialized countries normally supply free aids through the government funded healthcare program. There are also some companies that offer heavily discounted devices but consumers are cautioned about buying if they have not spoken to their doctors yet.
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.
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.
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.
Disposable hearing aids come with non-replaceable batteries. Such devices are designed simply for periodic use as well as for critical police investigation where a wearer only uses the device during the operation. People born with hearing disorder are advised to opt for these. However, it is a very good idea to spare at least one or two so as to something to use during emergencies.
Ordinary aids are regulated by the Federal Food and Drug Administration under Class I of medical devices. Industrialized countries normally supply free aids through the government funded healthcare program. There are also some companies that offer heavily discounted devices but consumers are cautioned about buying if they have not spoken to their doctors yet.
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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