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Noise Reduction In Hearing Aids
Beginning of essay
Recently in a local hearing clinic, a client’s concerns were discussed. “I’m afraid I won’t like them. My brother in law bought two hearing aids, and he keeps them in a drawer in the kitchen.” While the number of people dissatisfied with their hearing aids hovers around 50%, the hearing aid indu ....
Middle of essay
....irectional microphone. “The purpose of using a directional microphone is to focus its sensitivity toward the front of the listener, thereby attenuating or reducing unwanted “noise” or competition emanating from behind the listener.” (Stach 1998)
Microphone directionality can be accomplished by using a single microphone with two sound inlets. In this mechanical method, the time lag created by a sound entering each inlet is precisely calibrated to cancel out sounds from the sides and back of .... |
| Number of words: 2400 |
Approximate pages: 9 |
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