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Guide to Hearing Aids and Their Functions Devices that are made to amplify sound to alleviate impaired hearing need to be able to separate background noise from speech signals that are necessary for understanding. In other words, it is not just enough to have your audiologist conduct a comparative hearing aid selection where the patient would pick up the one that fits them best. The audiologist should primarily choose the best type of technology used to amplify speech signals and block out unnecessary background noise that hinders a person from hearing well. There are some analog hearing aids that are able to detect whether a sound is loud or soft. This device can detect unnecessary loud sounds like traffic sounds so that it is not further amplified. This feature is known as “automatic gain control”. The digital hearing aid on the other hand comprise a much more sophisticated means of processing incoming sounds and convert them into clearer and more audible sounds and then releases these at the appropriate sound level into the earso that one can take them comfortably. 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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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. 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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We have to remember that the center of human hearing is the most powerful signal processor found in our brains. And if the sound input from both ears are not fully functioning, the sound processor in the brain is simply lest to guess. 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.