| 非平稳信号时频分析的重排方法及其在语音信号处理中的应用 |
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| 引用本文： | 魏庆国,吴建华.非平稳信号时频分析的重排方法及其在语音信号处理中的应用[J].南昌大学学报(理科版),2004,28(2):174-177. |
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| 作者姓名： | 魏庆国 吴建华 |
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| 作者单位： | 南昌大学,电子信息工程系,江西,南昌,330029 |
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| 摘 要： | 介绍了非平稳信号时频联合分析中的重排方法。该方法的关键之处在于将代表信号局部能量分布的非线性卷积的值由卷积核的几何中心重排到其质量中心，从而提高时频表示的可读性。给出了几个例子来说明重排方法的应用效果。最后介绍了重排方法在语音信号处理中的应用。
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| 关 键 词： | 时频分析 重排 语音信号 |
| 文章编号： | 1006-0464(2004)02-0174-04 |
| 修稿时间： | 2003年6月27日 |
REASSIGNMENT- BASED NONSTATIONARY SIGNAL TIME- FREQUENCY ANALYSIS & ITS APPLICATION IN SPEECH SIGNAL PROCESSING |
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| WEI Qing-guo,WU Jian-hua.REASSIGNMENT- BASED NONSTATIONARY SIGNAL TIME- FREQUENCY ANALYSIS & ITS APPLICATION IN SPEECH SIGNAL PROCESSING[J].Journal of Nanchang University(Natural Science),2004,28(2):174-177. |
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| Authors: | WEI Qing-guo WU Jian-hua |
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| Abstract: | A reassignment method for nonstationary time-frequency joint analysis is introduced. This method creates a modified version of a representation by moving its values away from where they are computed, so as to produce a better localization of the signal components and improve the readability of the representation. A few examples are presented to show the effects of this method. Finally, the application of this method in speech signal processing is proposed. |
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| Keywords: | time-frequency analysis reassignment speech signal |
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