Title :
Applying comb filter to noise reduction of hearing aid
Author :
Yanagisawa, Koichi ; Tanaka, Kyoko ; Yamaura, Itsuo
Author_Institution :
Graduate Sch. of Sci. & Technol., Shinshu Univ., Nagano, Japan
Abstract :
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
Keywords :
filtering theory; hearing aids; noise abatement; spectral analysis; comb filter; digital hearing aid; fundamental frequency; noise reduction; spectrum envelopes; suppression; Acoustic noise; Auditory system; Filtering; Frequency; Human voice; Microphones; Noise reduction; Power harmonic filters; Textile technology; Working environment noise;
Conference_Titel :
Systems, Man, and Cybernetics, 1999. IEEE SMC '99 Conference Proceedings. 1999 IEEE International Conference on
Conference_Location :
Tokyo
Print_ISBN :
0-7803-5731-0
DOI :
10.1109/ICSMC.1999.816577
