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Improved Orthogonal Projection Method for Cancelling Acoustic Echo Signals  

Yun Hyun-min (재능대학 정보통신계열)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.9, no.4, 2005 , pp. 703-711 More about this Journal
Abstract
This paper proposes the improved orthogonal projection method as a new technique advancing the performance of the echo cancellation for speeches in the acoustic echo canceller. Comparing with the used NLMS adaptive algorithm, it shows that this method improves the performance of the echo cancellation for signals with the large auto-correlation. In order to testify performances of the orthogonal projection method whom this paper proposes, we have coded a simulation program and executed computer simulations. We observed convergence curves by using two adaptive algorithm for noises and speeches. From simulation results for two input signals, the proposed method shows the high ERLE and the fast convergence and the stable operation in case of using speeches as well as noises.
Keywords
음향반향제거기;직교투사법;적응 알고리즘;
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  • Reference
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