| 一种新的基于小波变换的语音消噪方法 |
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| 引用本文： | 龙东,李从清,孙立新,戴士杰.一种新的基于小波变换的语音消噪方法[J].河北工业大学学报,2008,37(3):43-47. |
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| 作者姓名： | 龙东 李从清 孙立新 戴士杰 |
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| 作者单位： | 河北工业大学,机械工程学院,天津,300130;中国人民解放军总参陆航研究所,八室,北京,101101;河北工业大学,机械工程学院,天津,300130;天津城市建设学院,能源与机械工程系,天津,300384;河北工业大学,机械工程学院,天津,300130 |
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| 基金项目： | 河北省自然科学基金
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河北省社会科学基金 |
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| 摘 要： | 提出一种新的语音消噪处理方法:二次小波分解全局阈值法.该方法不同于传统阈值消噪方法,首先对语音信号高频部分做了二次分解,然后应用阈值消噪的方法对信号进行消噪处理.该方法在MATLAB上进行了模拟实验.试验结果表明该种方法鲁棒性很好,提高了信噪比,去除了大部分噪声,同时有效信号的能量也相当完整地保留下来,能够很好地解决噪声对语音信号的干扰问题.
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| 关 键 词： | 小波变换 语音消噪 阈值消噪 |
A New Approach of Speech De-noising Based on Wavelet Transform |
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| LONG Dong,LI Cong-qing,SUN Li-xin,DAI Shi-jie.A New Approach of Speech De-noising Based on Wavelet Transform[J].Journal of Hebei University of Technology,2008,37(3):43-47. |
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| Authors: | LONG Dong LI Cong-qing SUN Li-xin DAI Shi-jie |
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| Affiliation: | LONG Dong1,2,LI Cong-qing1,3,SUN Li-xin1,DAI Shi-jie1(1.School of Mechanical Engineering,Hebei University of Technology,Tianjin 300130,China,2.Army Aviation Research Insti of PLA General Staff,Beijing 101101,3.Department of Energy Sources , Mechanical Engineering,Tianjin Urban Construction Institute,Tianjin 300384,China) |
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| Abstract: | A new approach of speech de-noising is put forward--second-decomposition wavelet global threshold.This ap-proach is different from the traditional methods.First,it decomposes high frequency twice,and then de-noises the signal by threshold de-noising.Simulated test is made on MATLAB.Test results show that the algorithm improved upon signal to noise ratio,and wiped off the most noise with full effective energy.At the same time,the interference problem of noise signal is absolutely solved. |
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| Keywords: | wavelet transform speech de-noising threshold de-noising |
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