基于MELP的智能对线器语音系统研究与优化  

Research and Optimization of Intelligent Line-check Device Speech System Based on MELP

作　　者：郭小定[1] 王兴[1] 李小龙[1] 范婷[1] 

机构地区：[1]湖南科技大学信息与电气工程学院,湖南湘潭411201

出　　处：《控制工程》2016年第11期1659-1665,共7页Control Engineering of China

基　　金：湖南省科技厅资助项目(2010GK3093;2011TT2030)

摘　　要：针对智能对线器工作过程略显冗余的问题,提出了在智能对线器基础上设计一个语音通信系统。对语音编码技术MELP(混合激励线性预测编码)进行了详细的阐述,并提出了开方变平方的优化运算,而且开创性的采用了三电平中心削波法对基音提取算法进行优化,使之保证语音质量的前提下,大大降低运算量,提高语音传输系统的稳定性。MATLAB仿真分析和语音测试的结果表明,智能对线器语音传输系统能够快速、准确的实现语音传输。In view of the problem that the working process of the intelligent line-check device is slightly redundant, a voice communication system is designed on the basis of the intelligent line-check device. The speech coding technology MELP （mixed excitation linear prediction coding） is elaborated in detail, the root to square optimization arithmetic is put forward, and the tri-level center clipping method is used for the optimization of the pitch extraction algorithm, under the premise of guaranteeing the quality of the voice, the computational complexity is greatly reduced and the stability of the voice transmission system is improved. The results of MATLAB simulation analysis and voice test show that the speech can be rapidly and precisely transmitted through the system.

关 键 词：MELP技术 智能对线器 语音传输 中心削波 MATLAB仿真 

分 类 号：TP39[自动化与计算机技术—计算机应用技术]