全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
电子学报  2012 

改进仿射投影算法及其在电子回声消除中的应用

DOI: 10.3969/j.issn.0372-2112.2012.06.027, PP. 1229-1234

Keywords: 电子回声消除,稀疏性,仿射投影算法,等比例仿射投影算法

Full-Text   Cite this paper   Add to My Lib

Abstract:

在电子回声消除应用中,为提高自适应算法的收敛速度,提出一种改进的仿射投影算法及其快速实现形式.新算法利用回声路径的稀疏结构特征,通过收敛步长控制矩阵,按滤波器各系数幅值大小,等比例地为其指定相应收敛步长,以加快大系数收敛,最终达到加快滤波器整体收敛速度的目的.对新算法进行的统计学分析,为其快速收敛于目标系统的算法特性提供了理论依据.仿真实验表明与传统自适应算法相比,新算法能减小稳态失调并大幅提高收敛速度,其低计算复杂度亦保证了系统的实时性.

References

[1]  ITU-T Recommendation G.168-2009,Digital Network Echo Cancellers[S].
[2]  李挥,林茫茫,胡海军,等.VoIP回声消除器设计及算法研究[J].电子学报,2007,35(9):1774-1778. LI Hui,LIN Mang-mang,HU Hai-jin,et al. A VoIP echo canceller design and algorithm study[J].Acta Electronica Sinica,2007,35(9):1774-1778.(in Chinese)
[3]  Duttweiler D.Proportionate normalized least mean squares adaptation in echo cancelers[J].IEEE Transactions on Speech and Audio Processing,2000,8(5):508-518.
[4]  Hongyang D,Droslovacki M.Improve convergence of the PNLMS algorithm for sparse impulse response identification[J].IEEE Letter on Signal Processing,2005,12(3):181-184.
[5]  朱义勇,姚富强,朱勇刚,等.一种新颖的变步长仿射投影算法[J].系统仿真学报,2009,21(4):984-987. ZHU Yi-yong,YAO Fu-qiang,ZHU Yong-gang,et al.New VSS affine projection algorithm and its application in system identification[J].Journal of System Simulation, 2009,21(4):984-987.(in Chinese)
[6]  Gay S L,Tavathia S.The fast affine projection algorithm[J].IEEE Trans,1995,54(5):3023-3026.
[7]  Paulo S R Diniz.自适应滤波算法与实现[M].第2版.刘郁林,景晓军,谭刚兵,译.杨义先,审校.北京:电子工业出版社,2004.51-53.
[8]  宋彦,汪萌,戴礼荣.带双端发声检测的回声消除改进算法[J].清华大学学报(自然科学版),2008,48(1):760-764. SONG Yan,WANG Meng,DAI Li-rong.Improved echo canceller for double-talk detection[J].Journal of Tsinghua University(Sci&Tech),2008,48(1):760-764.(in Chinese)
[9]  Hongyang D,Droslovacki M.Proportionate adaptive algorithms for network echo cancellation[J].IEEE Transactions on Signal Processing,2006,54(5):1794-1803.
[10]  刘立刚,F Masahiro,张世永.一种变步长Proportionate NLMS自适应滤波算法及其在网络回声消除中的应用[J].电子学报,2010,38(4):973-978. LIU Li-gang,F.Masahiro,ZHANG Shi-yong.A variable step-size proportionate NLMS adaptive filtering algorithm and its application in network echo cancellation .Acta Electronica Sinica,2010,38(4):973-978.(in Chinese)
[11]  谢胜利,周元建.一种新自适应滤波快速算法及其在多路回波消除中的应用[J].电子学报,2003,31(2):276-279. XIE Sheng-li,ZHOU Yuan-jian.A new adaptive filtering algorithm and its application in stereophonic acoustic echo cancellation[J].Acta Electronica Sinica,2003,31(2):276-279.(in Chinese)
[12]  Ozeki K,Umeda T.An adaptive filtering algorithm using an orthogonal projection to an affine subspace and its properties.[J].Electronics and Communications in Japan,1984,67(1):19-27.
[13]  Glentis G,Berberidis K,Theodoridis S.Efficient least squares adaptive algorithms for FIR transversal filtering[J].IEEE Signal Processing Magazine,1999,16(1):13-41.
[14]  LIU Xu,CHU Lin-hou.An improved affine projection algorithm and its application in acoustic echo cancellation[J].IEEE Image and Signal Processing,2010,50(9):4344-4348.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133