| 基于阈值的小波域语音增强新算法 |
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| 引用本文： | 徐爽,韩芳芳,郑德忠.基于阈值的小波域语音增强新算法[J].传感技术学报,2004,17(1):150-153. |
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| 作者姓名： | 徐爽 韩芳芳 郑德忠 |
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| 作者单位： | 燕山大学,仪器科学系,秦皇岛,河北,066004;燕山大学,仪器科学系,秦皇岛,河北,066004;燕山大学,仪器科学系,秦皇岛,河北,066004 |
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| 摘 要： | 提出了一种新的基于阈值的小波域语音增强算法,采用Bark尺度小波包对含噪语音进行分解,以模拟人耳的听觉特性.采用结点阈值法,用基于谱熵的方法估计结点噪声,实验表明,该算法在多种噪声,尤其是有色噪声和非平稳噪声条件下均有较好的语音增强效果.
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| 关 键 词： | 语音增强 Bark尺度小波包分解 结点阈值 |
| 文章编号： | 1004-1699(2004)01-0150-04 |
| 修稿时间： | 2003年11月10日 |
A New Algorithm for Speech Enhancement Using
Threshold2Based Wavelet Domain Method |
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| XU Shuang,HAN Fangf ang,ZHENG Dezho.A New Algorithm for Speech Enhancement Using
Threshold2Based Wavelet Domain Method[J].Journal of Transduction Technology,2004,17(1):150-153. |
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| Authors: | XU Shuang HAN Fangf ang ZHENG Dezho |
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| Affiliation: | Department of Instrument Science , Yanshan University , Qinhuangdao Hebei 066004 , China |
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| Abstract: | A new algorithm is proposed for speech enhancement, using a way based on threshold wavelet domain method. Bark-scaled wavelet packet is used for noisy speech decomposition to simulate the human auditory characteristics. Node dependent thresholding is proposed and a method based on spectral entropy is applied to estimate the node noise. This algorithm is valid on various noise conditions, especially on the color noise and non-stationary noise conditions. |
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| Keywords: | speech enhancement Bark-scaled wavelet packet decomposition node dependent thresholding |
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