| 基于异构小波基函数的语音增强方法研究 |
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| 引用本文： | 徐岩,张花花,刘军.基于异构小波基函数的语音增强方法研究[J].兰州铁道学院学报,2010,29(1):1-4. |
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| 作者姓名： | 徐岩 张花花 刘军 |
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| 作者单位： | 兰州交通大学电子与信息工程学院; |
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| 基金项目： | 甘肃省自然科学基金(3ZS061-A25-056);;兰州交通大学青蓝人才工程基金(JD04-18) |
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| 摘 要： | 小波基函数的正交程度不同,消失矩、支撑性等也都不同,因此,选用不同的小波基函数会有不同的语音增强效果.本文通过对小波基函数性能研究和筛选,实现了小波基函数在语音增强中的不同作用,同时还提出了一种基于语音信号浊音段和清音段的可变阈值的语音增强实现方案.计算机仿真结果表明:这些方法的综合运用不仅能有效提高语音信号的信噪比,而且在很大程度上改善了语音的失真度,具有一定的实践指导意义.
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| 关 键 词： | 语音增强 小波基函数 可变阈值 |
Research on Method of Speech Enhancement Based on Different Wavelet Base Functions |
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| XU Yan,ZHANG Hua-hua,LIU Jun.Research on Method of Speech Enhancement Based on Different Wavelet Base Functions[J].Journal of Lanzhou Railway University,2010,29(1):1-4. |
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| Authors: | XU Yan ZHANG Hua-hua LIU Jun |
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| Institution: | School of Electronic and Information Engineering/a>;Lanzhou Jiaotong University/a>;Lanzhou 730070/a>;China |
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| Abstract: | As different wavelet base functions have different orthogonal degrees,vanishing moments and support,different selections of the wavelet functions will result in different effects.The research on property and filtration of the wavelet function is described by means of computer simulation experiments of speech enhancement,and the effects in different treatment produced by different wavelet functions are studied.A solution to realize variable threshold is proposed based on the sonant and the surd of voice.The ... |
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| Keywords: | speech enhancement wavelet base function variable threshold value |
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