| 基于自适应提升小波变换的语音增强算法的研究 |
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| 引用本文： | 陈立伟,赵春晖,姜海丽.基于自适应提升小波变换的语音增强算法的研究[J].哈尔滨工程大学学报,2005,26(5):668-671. |
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| 作者姓名： | 陈立伟 赵春晖 姜海丽 |
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| 作者单位： | 哈尔滨工程大学,信息与通信工程学院,黑龙江,哈尔滨,150001;哈尔滨工程大学,理学院,黑龙江,哈尔滨,150001 |
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| 基金项目： | 黑龙江省自然科学基金资助项目(F2004-09) |
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| 摘 要： | 语音增强是解决噪声污染的有效方法,它的首要目标是在接收端尽可能从带噪语音中恢复纯净的语音信号.Sweldens等人引入了基于提升法的小波变换,也称为第二代小波变换.提升法是一种柔性的小波构造方法,它可以使用许多线性,非线性或者空间变化的预测和更新算子,而且可以确保变换的可逆性.该文讨论强背景噪声下的基于自适应提升小波变换的语音增强方法,并与自相关相减法语音增强算法进行比较.计算机仿真结果表明,该方法在大大消除背景噪声同时保持语音信号较好的可懂度.
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| 关 键 词： | 语音增强 小波变换 提升 自相关 |
| 文章编号： | 1006-7043(2005)05-0668-04 |
| 收稿时间： | 2004-07-02 |
| 修稿时间： | 2004年7月2日 |
Speech enhancement algorithm based on adaptive lifting wavelet transforms |
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| CHEN Li-wei,ZHAO Chun-hui,JIANG Hai-li.Speech enhancement algorithm based on adaptive lifting wavelet transforms[J].Journal of Harbin Engineering University,2005,26(5):668-671. |
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| Authors: | CHEN Li-wei ZHAO Chun-hui JIANG Hai-li |
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| Affiliation: | 1. School of Information and Communication Engineering, Harbin Engineering University, Harbin 150001, China; 2. School of Science, Harbin Engineering University, Harbin 150001, China |
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| Abstract: | Speech enhancement is an efficient method for removing noise.To a great extent,speech enhancement's aim is to resume the pure speech signal from the speech signal that contains noise.The lifting method,also named the second age wavelet,is a flexible constructing method that can use many linear,non-linear or prediction and upgrading operators,and can have inverse transform.Presented is a speech enhancement algorithm based on adaptive wavelet transform via lifting,as well as a comparison with the self-correlation subtraction algorithm.Experiment results show this method can eliminate background noise and make speech performance excellent. |
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| Keywords: | speech enhancement wavelet transform lifting method autocorrelation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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