语音编/解码仿真中S函数的设计与应用  

Design and Implementation of S-function in Dynamic Simulation of Speech Analysis and Synthesis

作　　者：姚文冰[1] 姚天任[1] 韩涛[1] 

机构地区：[1]华中科技大学电子与信息工程系

出　　处：《华中科技大学学报（自然科学版）》2001年第5期83-85,共3页Journal of Huazhong University of Science and Technology(Natural Science Edition)

摘　　要：以SIMULINK中M型S函数的设计为例 ,详细讨论了S函数的设计方法 ,并利用其实现了一个基于高阶谱分析的语音编 /解码实时仿真系统 .该系统解码后恢复的语音性能更接近于原始语音 ,所估计的激励信号更接近于白噪声 .与传统的方法相比 ,本方法提高了工作效率和可靠性 。The design and implement method of M file S Function in SIMULINK are discussed. Higher order spectral analysis method has the ability of resisting gaussian noise and analysis, identifying nonminimum, nonlinear systems. AR parameters of speech signals are extracted by solving Higher order Yuler Walker(HYW) Equations. An example of dynamic simulation of a higher order cumulant based speech analysis and synthesis system is realized in SIMULINK by S function. Compared with conventional methods, the design and simulation approach can enhance the working efficiency and reliability greatly which are very suitable for algorithm study.

关 键 词：语音编码 动态仿真 高阶谱分析 S函数 语音解码 SIMULINK 

分 类 号：TN912.3[电子电信—通信与信息系统] TP391.9[电子电信—信息与通信工程]