| 基于阈值的小波域语音降噪新算法 |
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| 引用本文： | 付炜,许山川.基于阈值的小波域语音降噪新算法[J].计算机与数字工程,2005,33(11):80-83. |
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| 作者姓名： | 付炜 许山川 |
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| 作者单位： | 燕山大学信息科学与工程学院,秦皇岛,066004 |
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| 摘 要： | 提出了一种新的基于阈值的小波域语音降噪算法。采用小波包对含噪语音进行分解，克服了传统的正交小波变换的缺陷。采用自适应阈值的方法，对每一尺度上的噪声最大量进行去噪，保留有用信号，可以进一步提高信噪比，仿真实验表明，该方法有更好的去噪效果。
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| 关 键 词： | 降噪 小波包分解 信噪比 自适应阈值 |
| 收稿时间： | 2005-03-11 |
| 修稿时间： | 2005年3月11日 |
A New Algorithm for Noise Reduction from Speech Using Threshold-based Wavelet Domain Method |
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| Fu Wei,Xu Shanchuan.A New Algorithm for Noise Reduction from Speech Using Threshold-based Wavelet Domain Method[J].Computer and Digital Engineering,2005,33(11):80-83. |
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| Authors: | Fu Wei Xu Shanchuan |
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| Affiliation: | College of Information Science and Engineering , Yanshan University, Qinhuangdao 066004 |
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| Abstract: | A new algorithm is proposed for noise reduction from speech,using a way based on threshold wavelet domain method.Wavelet packet is used for noise speech decomposition,which is better than the traditional orthogonal wavelet threshold de-noising method.In this thesis adaptive threshold value method can eliminate noise fully in each step,saves useful signals and improves the signal to noise ratio(SNR).Simulation experiments show that the method can get better de-noising effect. |
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| Keywords: | noise reduction wavelet packet decomposition SNR adaptive threshold value |
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