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Guide to Hearing Aids and Their Functions The number one problem in amplifying sound to alleviate an impaired hearing rest on the ability of the device to separate those troublesome background noise while simultaneously enhancing critical speech signals necessary for understanding. What this means is that it is not enough for audiologists simply to choose from among the many hearing aids what would best fit his patient. What is more important is what type of technology is used to amplify speech signal and control those unnecessary loud sounds that can choke one hearing tolerance. There are analog hearing aids that can detect loud or soft sounds. What this means is the device is able to recognize loud sounds like traffic sounds that it does not amplify further. This feature is known as “automatic gain control”. The other types of hearing aids are the digital ones and this has a more sophisticated means of processing incoming sounds and converts hem into clearer and more audible sounds before it releases it to the patient’s hearing at the appropriate sound level which is comfortable to him. This smart technology will enable the audiologist to give a more precise prescription when it comes to your degree of hearing loss, personal lifestyle, and the cosmetic or appearance needs. With digital hearing aids, you can hear normal and look normal, unlike when you wear the traditional analog hearing aids.
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The second best thing about the digital hearing aid is that it is digital. With this, even when your hearing problems becomes worse, you don’t need to replace it. This digital hearing aid can actually be reprogrammed by your hearing aid professional so that you don’t need to buy a new unit.
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We have to remember that the center of human hearing is the most powerful signal processor found in our brains. The sound processor in our brains are simply left to guess that sound it hears if the sound input from both ears are not clear. This means that when the stream of sound waves entering both ears is converted into electrical energy to be fed to the brain is marred, then it will also have an incorrect interpretation. This means that if we simple amplify sounds without filtering it the way the brain filters it out, localizing certain sounds in the environment, discriminating particular sounds or signals, auditory cuing sounds that have been stored as memory, if there is no filtering of sounds of this nature, then everything will be distorted, the brain cannot process it properly and your common and rational perception is totally undermined, and the only way to bring it back to normal is with the help of human made technology what we are using today.