Proceedings of the Korea Multimedia Society Conference (한국멀티미디어학회:학술대회논문집)
- 2003.05b
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- Pages.423-426
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- 2003
A Noise Robust Adaptive Algorithm for Acoustic Echo Caneller
- Lee, Young-Ho (Dept. of Electronics Eng., Pusan National University) ;
- Park, Jeong-Hoon (Samsung Electronics Company) ;
- Park, Jang-Sik (Dept. of Visual Technologies, Dongeui Institute of Technology) ;
- Son, Kyong-Sik (Dept. of Electronics Eng., Pusan National University)
- Published : 2003.05.01
Abstract
Adaptive algorithm used in Acoustic Echo Canceller (AEC) needs fast convergence algorithm when reference signal is colored speech signal. Set-Membership Affine Projection (SMAP) algorithm is derived from the constraint, which is the minimum value adaptive filter coefficient error. In this paper, we test the characteristic about noise of the SMAP algorithm and proposed modified version of SMAP algorithm fur using at AEC. As the projection order increase, the convergence characteristic of the SMAP algorithm is improved where no noise space. But if the noise uncorrelated with input signal exists, the AEC shows bad performance. In this paper, we propose normalized version of adaptive constants using estimated error signal for robust to noise and show the good performance through AEC simulation.
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