Publication: Echo cancellation in VoIP with improved least square lattice method
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Issued Date
2010-03-01
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ISSN
17412234
17412242
17412242
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2-s2.0-77950620162
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Mahidol University
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SCOPUS
Bibliographic Citation
World Review of Science, Technology and Sustainable Development. Vol.7, No.1-2 (2010), 141-160
Suggested Citation
Supachai Tangwongsan, Lttipon Rassameeroj Echo cancellation in VoIP with improved least square lattice method. World Review of Science, Technology and Sustainable Development. Vol.7, No.1-2 (2010), 141-160. doi:10.1504/WRSTSD.2010.032350 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/29985
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Title
Echo cancellation in VoIP with improved least square lattice method
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Abstract
In this work, an approach to echo cancellation in VoIP network based on the packet-based echo cancellation model was employed. In addition, a comparative validation was performed and then analysed specifically in the state of echo canceller as adaptive filtering was done by using three algorithms: normalised least mean square (NLMS), recursive least square (RLS) and least square lattice (LSL). Communication environments with three different echo strength levels: 20%, 50% and 70% of far-end speech were simulated. The result shows that in terms of time computation, NLMS is the best, followed by LSL and RLS as the last. However, NLMS suffers from the measure of ERLE, as it falls to the third place, followed by LSL and RLS as the first. Then, taking them all into consideration, it could be concluded that LSL is the best among all for echo cancellation as verified in the experimental simulation. Copyright © 2010 Inderscience Enterprises Ltd.