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 behind the ear or BTE aid is a plastic tube that carries sound in a customized ear mold. It comes in a larger size making it particularly easy to use. This is believed to last pretty longer than any smaller device. It can be integrated with a directional phone. The odd is, this is not easy to hide unless a wearer has a long hair.
In the ear devices are also custom-made. They have a shell that fits perfectly in the outer ear. They can house typical volume controls and directional microphones. They are also easy to manipulate as well as inserted. They tend to be bulky, 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.
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 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.
Choosing an MD hearing aid needs a professional guidance of a doctor. This is a very insensitive device that requires a series of tests and a careful consideration on important factors before a person can get 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 behind the ear or BTE aid is a plastic tube that carries sound in a customized ear mold. It comes in a larger size making it particularly easy to use. This is believed to last pretty longer than any smaller device. It can be integrated with a directional phone. The odd is, this is not easy to hide unless a wearer has a long hair.
In the ear devices are also custom-made. They have a shell that fits perfectly in the outer ear. They can house typical volume controls and directional microphones. They are also easy to manipulate as well as inserted. They tend to be bulky, 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.
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 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.
Choosing an MD hearing aid needs a professional guidance of a doctor. This is a very insensitive device that requires a series of tests and a careful consideration on important factors before a person can get one and use.
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