| LSP参数降维格型矢量量化应用研究 |
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| 引用本文： | 耿超,陈亮.LSP参数降维格型矢量量化应用研究[J].军事通信技术,2009(1). |
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| 作者姓名： | 耿超 陈亮 |
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| 作者单位： | 解放军理工大学通信工程学院研究生1队;解放军理工大学通信工程学院电子信息工程系; |
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| 摘 要： | 在分析LSP参数降维量化可行性的基础上,设计预处理机制实现了一种无码书LSP参数降维格型矢量量化算法,并提出了两个不同量化速率的VQ方案与MELP算法进行了对比。在24 bit/frame的实验方案中,组合4合成语音的PESQ均分超过了2.5,在无码书的条件下接近MELP有码书MSVQ的性能,可以满足低速率语音编码的音质要求并降低系统对空间复杂度和计算复杂度的需求。
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| 关 键 词： | 线谱对参数 降维 格型矢量量化 格点编码 |
LVQ Based Dimension-Reduced LSP Vector Quantization |
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| GENG Chao,CHEN Liang.LVQ Based Dimension-Reduced LSP Vector Quantization[J].Journal of Military Communications Technology,2009(1). |
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| Authors: | GENG Chao CHEN Liang |
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| Institution: | 1.Postgraduate Team 1 ICE;PLAUST;Nanjing 210007;China;2.Department of Electronic Information Engineering ICE;PLAUST |
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| Abstract: | Based on the analysis of the possibility of reducing the dimensions of LSP parameters and combined with pre-amplify mechanism,a codebook-free LVQ algorithm was implemented for dimension-reduced LSP parameters.Two experimental schemes were designed and the comparison was made with MELP algorithm.In 24 bit/frame scheme, combination-4 achieves over 2.5 in PESQ test without any codebook.The score is close to that of MSVQ with codebook.The scheme reduces the complexity of space and computing,and can fulfill the ... |
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| Keywords: | LSP parameters reducing of dimension lattice vector quantization lattice point encoding |
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