| 局部投影降噪算法参数的确定及其应用 |
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| 引用本文： | 崔琳,李亚安,刘若辰,李国辉.局部投影降噪算法参数的确定及其应用[J].电声技术,2011,35(3):64-68. |
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| 作者姓名： | 崔琳 李亚安 刘若辰 李国辉 |
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| 作者单位： | 崔琳,李亚安,刘若辰,CUI Lin,LI Yaan,LIU Ruochen(西北工业大学航海学院,陕西,西安,710072);李国辉,LI Guohui(西北工业大学航海学院,陕西,西安,710072;西安邮电学院电信系,陕西,西安,710061) |
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| 基金项目： | 陕西省自然科学基金资助项目 |
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| 摘 要： | 针对水声信号的非线性特征,采用局部投影降噪算法研究了舰船辐射噪声的非线性降噪问题.在分析局部投影降噪算法有关参数的选择对降噪效果影响的基础上,研究了局部投影邻域半径参数的估计.提出一种适合水声信号降噪的邻域半径估计算法,即通过估算信号的噪声强度确定局部投影的邻域半径.对Logistic模型和实际舰船信号进行降噪处理,结...
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| 关 键 词： | 水声信号 局部投影算法 降噪 Logistic模型 |
Parameters Determination of Local Projective Algorithm and Its Application |
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| CUI Lin,LI Yaan,LIU Ruochen,LI Guohui.Parameters Determination of Local Projective Algorithm and Its Application[J].Audio Engineering,2011,35(3):64-68. |
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| Authors: | CUI Lin LI Yaan LIU Ruochen LI Guohui |
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| Affiliation: | CUI Lin1,LI Yaan1,LIU Ruochen1,LI Guohui1,2(1.College of Marine,Northwestern Polytechnical University,Xi an 710072,China(2.School of Electronic Engineering,Xi an University of Post and Telecommunications,Xi an 710061,China) |
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| Abstract: | In this paper,the application of well-known local projective noise reduction method to underwater acoustic signals is focused on.What and how parameters select in using local projective noise reduction method are discussed,especially for the parameter of local neighborhood size,which greatly affects the result of noise reduction.In order to improve both the efficiency and the convergence of the local projective noise reduction method,a new way to estimate local neighborhood size is proposed.The new method i... |
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| Keywords: | underwater acoustic signal local projective algorithm noise reduction Logistic map |
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