주파수 영역에서의 적응 알고리즘을 이용한 디지털 보청기의 소음 제거에 관한 연구

다국어 초록 (Multilingual Abstract)

The study on noise deduction in hearing aids is one important critical factor for hearing impaired and people who are wearing the hearing aids. Therefore many researchers have interested on two microphone system to reduce noise in hearing environments. However, the two microphone system is limited to reduce noise when speech and noise are imput together to the microphone. The purpose of this study was to simulate the noise reduction effects in the frequency domain of digital hearing aids with adaptive algorithm. The results of this study were that: (a) the adaptive algorithm is perfect to reduce the noise in the back and side directions with two different azimuths; and (b) the adaptive algorithm is perfect to reduce the noises in the different back sides with two different azimuths. Therefore this study concluded that the adaptive algorithm in the frequency domain of digital hearing aids is effect to reduce noises in hearing environments. Also this study suggested that the adaptive algorithm is effect for most hearing impaired who are wearing only one hearing aids.

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