LSP transcoding method between 3GPP AMR-NB and ITU-T G.729A based on GMM

LIU Zhang-yu; BAO Chang-chun; QIU Jian-wei; XU Hao

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LSP transcoding method between 3GPP AMR-NB and ITU-T G.729A based on GMM

更新时间：2024-10-14

- LSP transcoding method between 3GPP AMR-NB and ITU-T G.729A based on GMM
- Vol. 31, Issue 2, Pages: 44-50(2010)
- 作者机构：
  
  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
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN912.3
- Published：2010
- 稿件说明：
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LIU Zhang-yu, BAO Chang-chun, QIU Jian-wei, et al. LSP transcoding method between 3GPP AMR-NB and ITU-T G.729A based on GMM[J]. 2010, 31(2): 44-50.
DOI：

LIU Zhang-yu, BAO Chang-chun, QIU Jian-wei, et al. LSP transcoding method between 3GPP AMR-NB and ITU-T G.729A based on GMM[J]. 2010, 31(2): 44-50. DOI：

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。

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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