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Understanding Hearing Aids 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. 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. 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. 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.