Performance Improvement of Endpoint Detection of Double-Talking Period in the Acoustic Echo Canceller 


Vol. 27,  No. 1, pp. 58-65, Jan.  2002


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  Abstract

This paper deals with a delay problem in the endpoint detection of double-talk detection algorithm using correlation coefficient in the acoustic echo canceller. In case that past power is much bigger than current power like at the end of double-talking period, the power, estimated using forgetting factor, decreases slowly to cause a delay problem in the endpoint detection. In this paper, two methods are proposed to solve this problem. One is that the current power is periodically replaced by a new average power and the other is that the past power in recursive equation is periodically removed or replaced by other values. The simulation results show that proposed methods outperform conventional method in the endpoint detection of double-talking periods without increasing the computational burden much more.

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  Cite this article

[IEEE Style]

S. Kim, H. Kwon, K. Bae, K. J. Byun, "Performance Improvement of Endpoint Detection of Double-Talking Period in the Acoustic Echo Canceller," The Journal of Korean Institute of Communications and Information Sciences, vol. 27, no. 1, pp. 58-65, 2002. DOI: .

[ACM Style]

Si-ho Kim, Hong-seok Kwon, Keun-sung Bae, and Kyung Jin Byun. 2002. Performance Improvement of Endpoint Detection of Double-Talking Period in the Acoustic Echo Canceller. The Journal of Korean Institute of Communications and Information Sciences, 27, 1, (2002), 58-65. DOI: .

[KICS Style]

Si-ho Kim, Hong-seok Kwon, Keun-sung Bae, Kyung Jin Byun, "Performance Improvement of Endpoint Detection of Double-Talking Period in the Acoustic Echo Canceller," The Journal of Korean Institute of Communications and Information Sciences, vol. 27, no. 1, pp. 58-65, 1. 2002.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880