[1]王蓉蓉,李 平,曾毓敏,等.一种基于GMM和多项式拟合的语音编码改进算法[J].南京师范大学学报(工程技术版),2017,17(02):063.[doi:10.3969/j.issn.1672-1292.2017.02.010]
 Wang Rongrong,Li Ping,Zeng Yumin,et al.An Improved Speech Coding Algorithm Based onGMM and Polynomial Fitting[J].Journal of Nanjing Normal University(Engineering and Technology),2017,17(02):063.[doi:10.3969/j.issn.1672-1292.2017.02.010]
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一种基于GMM和多项式拟合的语音编码改进算法
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南京师范大学学报(工程技术版)[ISSN:1006-6977/CN:61-1281/TN]

卷:
17卷
期数:
2017年02期
页码:
063
栏目:
计算机工程
出版日期:
2017-06-30

文章信息/Info

Title:
An Improved Speech Coding Algorithm Based onGMM and Polynomial Fitting
文章编号:
1672-1292(2017)02-0063-07
作者:
王蓉蓉1李 平2曾毓敏1韦 怡1
(1.南京师范大学物理科学与技术学院,江苏 南京 210023)(2.泰州职业技术学院信息技术学院,江苏 泰州 225300)
Author(s):
Wang Rongrong1Li Ping2Zeng Yumin1Wei Yi1
(1.School of Physical Science and Technology,Nanjing Normal University,Nanjing 210023,China)(2.College of Information Technology,Taizhou Polytechnic College,Taizhou 225300,China)
关键词:
语音编码GMM多项式拟合范特蒙矩阵
Keywords:
speech codingGMMpolynomial fittingVandermonde matrix
分类号:
TN912.3
DOI:
10.3969/j.issn.1672-1292.2017.02.010
文献标志码:
A
摘要:
提出一种基于高斯混合模型和多项式拟合的语音编码改进算法. 在GMM模型对短时语音谱包络进行参数化的基础上,将一定数量的语音帧划分为一个片段,利用谱特征的相关性对片段内的GMM参数进行多项式拟合联合编码,从而使得参数进一步减少. 仿真结果表明,本文算法码率对比基于GMM的语音编码器有显著降低.
Abstract:
A vocoder is proposed basing on polynomial fitting and Gaussian Mixture Model(pGMM). In the vocoder,several frames are collected into a segment after using GMM model to parameterize the short-time speech spectrum envelope. The polynomial trajectory is used to fit the parameters of GMM in a segment according to the correlation between neighboring frames,thus reducing the number of parameters. The results show that the bit rate of pGMM vocoder is further reduced in contrast with the vocoder based on GMM.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2016-09-18.
基金项目:江苏省科技支撑计划(BE2014139)、江苏省自然科学基金(BK2010546).
通讯联系人:曾毓敏,教授,研究方向:语音信号处理和图像处理. E-mail:zengyumin@njnu.edu.cn
更新日期/Last Update: 2017-06-30