NLMS Adaptive Filter Based Acoustic Echo Canceller 


Vol. 35,  No. 4, pp. 343-349, Apr.  2010


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  Abstract

In this paper, we study real time AEC (acoustic echo canceller) based on NLMS adaptive filter. Proposed method improves conversation quality by enhancing the performance of AEC during double talk section and reduces the power consumption by controling the adaption operation of NLMS adaptive filter. Proposed method examines the convergence of the NLMS adaptive filter, stores the estimated echo path and chooses operation of NLMS adaptive filter. Furthermore if double talk is detected, the proposed AEC utilizes the stored echo path optionally considering missed double talk time. When the proposed AEC is used, the performance of the AEC is enhanced although the simple double talk detector is used and the power consumption of the AEC is reduced.

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  Cite this article

[IEEE Style]

S. S. Hwang, S. S. Yun, S. C. Kim, C. D. Lee, "NLMS Adaptive Filter Based Acoustic Echo Canceller," The Journal of Korean Institute of Communications and Information Sciences, vol. 35, no. 4, pp. 343-349, 2010. DOI: .

[ACM Style]

Sung Sue Hwang, Sang Suk Yun, Suk Chan Kim, and Chae Dong Lee. 2010. NLMS Adaptive Filter Based Acoustic Echo Canceller. The Journal of Korean Institute of Communications and Information Sciences, 35, 4, (2010), 343-349. DOI: .

[KICS Style]

Sung Sue Hwang, Sang Suk Yun, Suk Chan Kim, Chae Dong Lee, "NLMS Adaptive Filter Based Acoustic Echo Canceller," The Journal of Korean Institute of Communications and Information Sciences, vol. 35, no. 4, pp. 343-349, 4. 2010.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880