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Applying comb filter to noise reduction of hearing aid
Description
We developed a noise reduction method for a digital hearing aid. In order to utilize the comb filter method for noise reduction, a detection method of fundamental frequency of human voice is developed using the time continuous property of spectrum envelopes, and the suppression methods of strange sounds accompanying the filtering are also developed. Performance of the noise reduction was verified by test hearing. We conclude that the proposed method is effective for noise reduction of the hearing aid.
Journal
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- IEEE SMC'99 Conference Proceedings. 1999 IEEE International Conference on Systems, Man, and Cybernetics (Cat. No.99CH37028)
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IEEE SMC'99 Conference Proceedings. 1999 IEEE International Conference on Systems, Man, and Cybernetics (Cat. No.99CH37028) 6 352-357, 2003-01-20
IEEE
