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Improvement for Hearing Aids System Using Adaptive Beam-forming Algorithm  

이채욱 (대구대학교 정보통신공학과)
오신범 (대구대학교 정보통신공학과)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.29, no.5C, 2004 , pp. 673-682 More about this Journal
Abstract
The adaptive beam-forming is promising approach for noise reduction in hearing aids. This approach has come in the focus of interest only recently, because of the availability of new and powerful digital signal processors. The adaptation U using usually a Least Mean Squares algorithm, updates the weight vector. In this Paper, we propose a fast wavelet based adaptive algorithm using variable step size algorithm which varies adaptive constant by the change of signal environment. We compared the performance of the proposed algorithm with the known adaptive algorithm using computer simulation of multi channel adaptive bemformer in hearing aids. As the result the proposed algorithm is suitable for adaptive signal processing area using hearing aids and has advantages reducing computational complexity. And we show the beam-forming system using proposed algorithm converges stably in a sudden change of system environment.
Keywords
adaptive filter; wavelet; variable step size; hearing aids;
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  • Reference
1 Multimicrophone noise cancellation for improvement of hearing aid performance /
[ Shields,P.W.;Campbell,D.R. ] / Acoust.., Speech, and Signal Proc.., ICASSP
2 Fast Algorithms for Discrete and Continuous Wavelet Transforms /
[ O.Rioul;P.Duhamel ] / IEEE Trans. Information Theory
3 Short-length FIR Filters and their use on fast nonrecursive filtering /
[ Z.J.Mou P.Dauhamel ] / IEEE Trams. Signal Proc..   DOI   ScienceOn
4 On the convergence properties of multidelay frequency domain adaptive filter /
[ Junghsi Lee;Sheng Chieh Chang ] / Proceedings of the 1999 IEEE International Conference on Acoustics, Speech, and Signal Processing
5 Running FIR and IIR Filtering Using Multirate Filter Banks /
[ M.Vetterli ] / IEEE Trans. Acost..,Speech, Signal Proc.
6 Speech enhancement for hearing aids using adaptive beamformers /
[ Farassopulos,A ] / Acoustics, Speech, and Signal Processing, ICASSP-89
7 Optimality in the choice of convergence factor for gradient based adaptive algorithm /
[ F.F.Yassa ] / IEEE Trans. Acoustic, Speech, Signal Processing
8 Analysis and Implementation of Variable Step Size Adaptive Algorithms /
[ Joseph B.Evans;Ping Xue;B.Liu ] / IEEE Trans. Signal Processing   DOI   ScienceOn
9 A new class of gradient adaptive step-size LMS algorithms /
[ Wee Peng Ang;Farhang Boroujeny,B ] / IEEE Trans. Signal Proc..   DOI   ScienceOn
10 Waelet Transform Domain LMS Algorithm /
[ Hosur;A.H.Tewfik ] / Proc. ICASSP-93
11 Acombined fixed/adaptive beamforming noise-reduction system for hearing aids /
[ Kompis.M;Feuz.P;Valentini.G;Pelizzone.M ] / Engineering in Medicine and Biology Society, 1998. Proceedings of the 20th Annual International Conference of the IEEE