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。
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.
出处
《通信学报》
EI
CSCD
北大核心
2010年第2期44-50,共7页
Journal on Communications