| 一种改进的快速LMS/Newton算法及其在声回波对消中的应用 |
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| 引用本文： | 王永德,王春霞. 一种改进的快速LMS/Newton算法及其在声回波对消中的应用[J]. 电子学报, 2000, 28(2): 97-100 |
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| 作者姓名： | 王永德 王春霞 |
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| 作者单位： | 四川大学无线电系,四川成都 610064 |
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| 基金项目： | 国家自然科学基金!(No .69672 0 39) |
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| 摘 要： | 本文提出了一种改进的快速LMS/Newton算法.该算法既不同于完全基于RLS算法的FNTF算法[1],又不同于完全基于LMS算法的算法2[2].算法在格型预测器部分采用快速RLS算法,而在自适应横向滤波器部分采用LMS算法,并加以适当改进.所提出的算法既不存在FNTF的稳定性问题,又比算法2[2]有更快的收敛速度.采用语音信号激励,辨识实际测量的声回授通道的冲激响应的模拟实验证实了上述论断.
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| 关 键 词： | LMS/Newton算法 自适应系统辨识 声回波对消 |
| 收稿时间： | 1998-11-13 |
An Improved Fast LMS/Newton Algorithm for Application to Acoustic Echo Cancellation |
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| WANG Yong-de,WANG Chun-xia. An Improved Fast LMS/Newton Algorithm for Application to Acoustic Echo Cancellation[J]. Acta Electronica Sinica, 2000, 28(2): 97-100 |
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| Authors: | WANG Yong-de WANG Chun-xia |
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| Affiliation: | Dept.of Radio Electronics,Sichuan University,Chengdu 610064,China |
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| Abstract: | In this paper we proposed an improved fast LMS/Newton algorithm for application to acoustic echo cancellation.The new algorithm is different from not only the FNTF algorithm [1] based the FRLS,but also the algorithm 2 [2] based on the LMS completely.For the proposed one we use the fast RLS algorithm in lattice predictive filtering part with some modification and the LMS in adaptive transversal filtering part.Therefore it has the advantage of both the fast convergence for FNTF and the stability for the algorithm 2 [2] .The simulation experiments using Chinese speech exciting for modeling actual acoustic channel justify the previous issue. |
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| Keywords: | LMS/Newton algorithm adaptive system identification acoustic echo cancellation |
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