| 弱稀疏语音信号的欠定盲分离 |
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| 引用本文： | 和继威,刘郁林,王 开,李 力.弱稀疏语音信号的欠定盲分离[J].太赫兹科学与电子信息学报,2011,9(6):765-769. |
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| 作者姓名： | 和继威 刘郁林 王 开 李 力 |
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| 作者单位： | 重庆通信学院DSP实验室;重庆市教育考试院; |
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| 摘 要： | 为解决弱稀疏语音信号的欠定盲分离问题,根据语音信号的部分W-分离正交性,提出一种基于单源主导区间的混合矩阵盲估计方法。该方法根据单源主导区间的性质,通过二元行矢量提取单源观测样本,对单源观测样本进行K均值聚类和主成分分析来估计混合矩阵。仿真结果表明,提出的方法可有效提高分离语音的性能,与直接利用K-PCA方法相比,分离语音的平均信噪比提高了10 dB左右。
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| 关 键 词： | 欠定盲分离 弱稀疏 单源主导区间 W-分离正交性 |
| 收稿时间： | 2011/1/12 0:00:00 |
| 修稿时间： | 2011/3/4 0:00:00 |
Underdetermined blind separation for weak sparse speech signals |
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| HE Ji-wei,LIU Yu-lin,WANG Kai and LI Li.Underdetermined blind separation for weak sparse speech signals[J].Journal of Terahertz Science and Electronic Information Technology,2011,9(6):765-769. |
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| Authors: | HE Ji-wei LIU Yu-lin WANG Kai and LI Li |
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| Institution: | HE Ji-wei1,LIU Yu-lin1,WANG Kai1,LI Li2(1.Chongqing Communication College,Chongqing 400035,China,2.Chongqing Education Examination College,China) |
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| Abstract: | In order to solve the problem of underdetermined blind speech separation for weak sparse speech signals,according to the partial approximate W-disjoint orthogonality of weak sparse speech signals,a blind mixing matrix estimation method is proposed based on single-source dominated areas.In this method,according to the property of the single-source dominant areas,single-source observational samples are extracted by a binary row vector;then the mixing matrix is estimated by K means clustering and Principal Com... |
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| Keywords: | underdetermined blind separation weak sparse single-source dominant area W-disjoint orthogonality |
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