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Guide to Hearing Aids and Their Functions The main purpose of devices that are used so that sound is amplified to alleviate impaired hearing is to separate background noise from critical speech signals that are necessary for the person to understand what is being said. This means that when choosing a hearing aid for a patient, your audiologist should not only conduct a comparative selection on what would best fit the 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 some analog hearing aids that are able to detect whether a sound is loud or soft. This means that they are able to recognize that loud sound, such as traffic, which does not need further amplification. 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. Because of this smart technology, a more precise prescription is possible in reference to your degree of hearing loss, personal lifestyle and the cosmetic or appearance needs. With this, your audiologist can make your hearing more normal and look normal than when you use the traditional analog hearing aids.
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And since they are digital, then that alone makes it a great hearing aid. This means that you no longer need to throw out a scrap hearing aid when your worsening hearing loss becomes prominent. Reprogramming that same hearing aid by simply interfacing your device to the computer in the office of your hearing aid professional can easily be done and spare you from buying a new unit.
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To take this hearing factor deeper, it must be remembered that at the center of human hearing is the most powerful signal processor found in our brain. 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. In other words, when an endless stream of sound waves from both ears is then converted into electrical energy to be fed to the central processor is marred then it follows that its interpretation will also be incorrect. 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.

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