| 基于小波变换系数自适应阈值法在语音去噪中的应用 |
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| 引用本文： | 孙炯宁,傅德胜,徐永华.基于小波变换系数自适应阈值法在语音去噪中的应用[J].南京气象学院学报,2005,28(1):133-137. |
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| 作者姓名： | 孙炯宁 傅德胜 徐永华 |
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| 作者单位： | 南京信息工程大学,计算机科学与技术系,江苏,南京,210044 |
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| 摘 要： | 在软阈值去噪算法基础上，根据小波变换后信号与噪音具有的奇异性，提出无偏风险自适应阈值估计算法，并应用于语音信号的去噪处理，实验结果表明该算法的最小均方误差低于其他的去噪算法。
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| 关 键 词： | 带噪语音 小波变换 去噪 自适应阈值 |
| 文章编号： | 1000-2022(2005)01-0133-05 |
Application of Adaptive Thresholding Based on Coefficients of Wavelet Transform to the Speech De-noising |
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| SUN Jiong-ning,FU De-sheng,XU Yong-hua.Application of Adaptive Thresholding Based on Coefficients of Wavelet Transform to the Speech De-noising[J].Journal of Nanjing Institute of Meteorology,2005,28(1):133-137. |
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| Authors: | SUN Jiong-ning FU De-sheng XU Yong-hua |
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| Abstract: | Because the signals and noises after the wavelet transform have the singularity,this paper proposes an unbiased risk estimate algorithm on the basis of soft thresholding given by Dohono,and applies it to the speech de-noising.The experimental results show that the algorithm has a least minimum mean-squared error than the other algorithms. |
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| Keywords: | noisy speech wavelet transform de-noising adaptive thresholding |
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