| 基于GMM的AMR-NB与G.729A之间的LSP参数转码方法 |
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| 引用本文： | 刘张宇,鲍长春,邱建伟,徐昊. 基于GMM的AMR-NB与G.729A之间的LSP参数转码方法[J]. 通信学报, 2010, 31(2): 44-50 |
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| 作者姓名： | 刘张宇 鲍长春 邱建伟 徐昊 |
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| 作者单位： | 北京工业大学,电子信息与控制工程学院,语音与音频信号处理实验室,北京,100124 |
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| 摘 要： | 通过对高斯混合模型的数学分析,建立并实现了一种基于高斯混合模型的、AMR-NB与G.729A之间的LSP参数转码算法,并通过实验对高斯混合模型在转码中的一些实际应用问题进行了分析和讨论.实验结果表明,提出的基于高斯混合模型的LSP参数转码算法在合成语音质量不次于DTE方法的同时,LSP参数转码复杂度下降了78%以上.
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| 关 键 词： | 语音转码 |
LSP transcoding method between 3GPP AMR-NB and ITU-T G.729A based on GMM |
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| LIU Zhang-yu,BAO Chang-chun,QIU Jian-wei,XU Hao. LSP transcoding method between 3GPP AMR-NB and ITU-T G.729A based on GMM[J]. Journal on Communications, 2010, 31(2): 44-50 |
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| Authors: | LIU Zhang-yu BAO Chang-chun QIU Jian-wei XU Hao |
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| Affiliation: | LIU Zhang-yu,BAO Chang-chun,QIU Jian-wei,XU Hao(Speech , Audio Signal Processing Lab,School of Electronic Information , Control Engineering,Beijing University of Technology,Beijing 100124,China) |
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| Abstract: | An efficient transcoding algorithm of LSP(line spectrum pairs) parameters based on GMM(Gaussian mixture model) was proposed and implemented through the mathematical analysis of GMM.Meanwhile,several practical issues in details were analyzed under experiments.The experiments indicate that the computational complexity of the proposed LSP transcoding algorithm is reduced by above 78% and the transcoded speech quality is not worse than DTE method. |
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| Keywords: | GMM AMR-NB G729A LSP speech transcoding GMM AMR-NB G729A LSP |
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