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Different 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. 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. The important thing to identify is the type of technology used to amplify speech signals and control unnecessary loud sounds that would hinder the person from hearing properly. Some analogue hearing aids can detect whether sounds are loud or quiet. 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”. On the other hand, the digital hearing aid has a more sophisticated means of processing incoming sounds and converts them into clearer and more audible sounds and these sounds are released at the right sound level into the ears of the patient so that he can receive them comfortably. Thus, when an audiologist makes a prescription, it is more precise, and able to target your level of hearing loss, personal lifestyle, and appearance factor. 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. This means that you don’t near to throw it our if your hearing problem worsens. Reprogramming this hearing aid is possible through computer means by your hearing aid professional so that it adjust to your level of hearing, and you don’t need to get a new one.
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If we look at this subject deeper, we would remember that the brain houses the most powerful signal processor which is at the center of human hearing. Yet, without the two fully functioning sound input that comes from both ears, this remarkable sound processor is now left 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.