| 有源噪声控制的一种变换域算法 |
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| 引用本文： | 尹建民,周雅莉,张奇志,关碧华.有源噪声控制的一种变换域算法[J].应用声学,2004,23(3):33-39. |
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| 作者姓名： | 尹建民 周雅莉 张奇志 关碧华 |
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| 作者单位： | 北京机械工业学院计算机及自动化系,北京,100085 |
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| 基金项目： | 北京市教委资助科技项目(KM200311232137)，北京市优秀人才培养专项经费资助 |
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| 摘 要： | 有源噪声控制广泛应用于中低频噪声控制中。传统的有源控制都是在时域内使用LMS算法进行控制，由于LMS算法的收敛速度跟输入信号的自相关矩阵特征值分布有关，当特征值分布较大时，LMS算法的收敛速度会变的很慢。本文使用离散余弦变换(DCT)技术，在变换域内进行有源噪声控制的研究，同时考虑了变换域约束。仿真表明算法的有效性。
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| 关 键 词： | 有源噪声 变换域算法 ANC LMS DCT 离散余弦变换 |
Active noise control using a transform-domain algorithm |
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| YIN Jian-Min,ZHOU Ya-Li,ZHANG Qi-Zhi and GUAN Bi-Hua.Active noise control using a transform-domain algorithm[J].Applied Acoustics,2004,23(3):33-39. |
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| Authors: | YIN Jian-Min ZHOU Ya-Li ZHANG Qi-Zhi and GUAN Bi-Hua |
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| Institution: | Department of Computer and Automation, Beijing Institute of Machinery, Beijing 100085;Department of Computer and Automation, Beijing Institute of Machinery, Beijing 100085;Department of Computer and Automation, Beijing Institute of Machinery, Beijing 100085;Department of Computer and Automation, Beijing Institute of Machinery, Beijing 100085 |
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| Abstract: | Active Noise Control (ANC) is widely used in low frequency noise control.Traditional ANC system uses LMS algorithm in time-domain. But the convergence speed of LMS algorithm depends on the eigenvalues spread of the input autocorrelation matrix.The convergence speed becomes very slow when the eigenvalues spread is very large.A transform-domain algorithm using DCT technique is presented in this paper, and the transform-domain constraint is considered. The results show that transform-domain algorithm is a more effective control algorithm. |
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| Keywords: | ANC Time-domain Transform-domain LMS DCT |
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