Man being a social animal always needs to communicate with each other for both the personal and professional reasons. Whatever is the reason but it is a fact that no one can live alone and needs to express his feelings through the use of words. From a very early stage we are taught to express our views through our mother tongue. But there are many people who are suffering from hearing impairment problem either due to the old age or because of having some major problem in ear. Hearing impairment is a disability that generally arises with aging and requires immediate medical assistance. Thus to help people out with this hearing impairment problem medical science has come out with numerous hearing aid gadgets that will help elderly patients to lead a normal life. Now-a-days there are different models of hearing aids available in the market and a person buy a hearing aid depending on the amount of hearing loss. Some of the hearing aids models are so compact that they completely fit inside the ear and can be hardly noticed by anyone. Many people prefer this model of hearing aid as their problems are not exposed in front of everyone. This hearing aid device is suitable for people having minor hearing loss problem as it is available with limited features. Another common model of hearing aid available in the market is that partly fit into the ear canal and it comes with several features like volume control etc. Hearing aids equipped with more features are found beneficial for person suffering from mild to moderate hearing problems. Hearing aids generally comprises of three components called microphone, amplifier and the speaker. Microphone helps in picking the sound of the of the surrounding vicinity and amplifier helps by increasing the sound level of the surrounding and the speaker transfer the increased sound level to the ear so that a person can clearly hear the sound. Hearing aid battery is another vital component that is required for the proper functioning of the hearing aid. Battery needs to be regularly replaced so that the one is able to achieve optimum performance from the device. With the help of theses components this hearing aid device has become a perfect gift of technology for hearing impaired persons as it enhances one listening power to a great extent.
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