| 一种新的语音LSF矢量量化码书优化算法 |
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| 引用本文： | 唐建,何劲松,郭立.一种新的语音LSF矢量量化码书优化算法[J].电路与系统学报,2008,13(3):68-74. |
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| 作者姓名： | 唐建 何劲松 郭立 |
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| 作者单位： | 中国科学技术大学,电子科学与技术系,安徽,合肥,230026 |
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| 基金项目： | 国家自然科学基金，中国科技大学校科研和教改项目 |
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| 摘 要： | LSF(线谱频率)码书的性能对合成语音质量有着重要影响.经典的LBG算法容易陷入局部最优,而目前的一些码书进化算法搜索空间较大、搜索效率不明显.本文提出了一种新型的基于对LSF矢量空间进行拉伸变化的混合进化码书优化算法.该算法编码空间与矢量同维,相对较小,便于优化操作.算法中引入EP中的变异操作对PSO位置、速度矢量进行控制,以提高优化搜索算法的效率.实验结果表明,本文算法有效地改善了码书性能.
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| 关 键 词： | 粒子群优化 进化规划 矢量量化 矢量空间尺度拉伸 |
A novel adaptive mutation PSO vector quantization |
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| TANG Jian,HE Jin-song,GUO Li.A novel adaptive mutation PSO vector quantization[J].Journal of Circuits and Systems,2008,13(3):68-74. |
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| Authors: | TANG Jian HE Jin-song GUO Li |
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| Affiliation: | TANG Jian,HE Jin-song,GUO Li ( Department of Electronic Science , Technology,University of Science , Technology of China,Hefei 230026,China ) |
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| Abstract: | The line spectral frequencies (LSF) codebook is important to the synthesized speech quality. The classical algorithm LBG usually plunges into local optima. The search space of some evolutionary codebook algorithms is biggish and their search efficiency is unconspicuous. A new hybrid evolutionary LSF codebook optimization algorithm is proposed based on the vector space stretching. In this new algorithm, the code string length is equal to the vector dimension, which is relatively small, and the optimization p... |
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| Keywords: | particle swarm optimization evolutionary programming vector quantization vector space scale-stretching |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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