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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.
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.
Behind the ear aids are plastic tubes that carry sound in customized ear molds. They come in larger sizes making it easy for users to manipulate. These can last pretty much longer compared with the smaller devices. They could be integrated with directional microphones. The thing is, these are not quite easy to hide especially if the wearer has a short 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 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.
Buying any MD hearing aid requires a professional guidance from a doctor. The device is very insensitive that necessitates a series of tests as well as a careful consideration on critical factors before a user can get one.
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.
Behind the ear aids are plastic tubes that carry sound in customized ear molds. They come in larger sizes making it easy for users to manipulate. These can last pretty much longer compared with the smaller devices. They could be integrated with directional microphones. The thing is, these are not quite easy to hide especially if the wearer has a short 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 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.
Buying any MD hearing aid requires a professional guidance from a doctor. The device is very insensitive that necessitates a series of tests as well as a careful consideration on critical factors before a user can get one.
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