目录1引言..................................................................................................................................12设计总体方案..................................................................................................................22.1设计要求...................................................................................................................22.2设计总体方案...........................................................................................................22.3设计内容...................................................................................................................22.4设计原理...................................................................................................................23语音信号的具体实现......................................................................................................43.1语音信号的采集.......................................................................................................43.2语音信号的时域分析...............................................................................................43.3语音信号加噪与频谱分析.......................................................................................53.4设计FIR和IIR数字滤波器....................................................................................63.5用滤波器对加噪语音信号进行滤波.....................................................................103.6比较滤波前后语音信号的波形及频谱.................................................................104合成信号的具体实现....................................................................................................144.1合成信号的产生原理.............................................................................................144.2调试分析.................................................................................................................144.2.1混合信号分析................................................................................................144.2.2三种滤波器设计............................................................................................145MATLABGUI的简介...................................................................................................175.1MATLAB软件介绍................................................................................................175.2MATLAB常用函数简介........................................................................................185.3设计系统界面.........................................................................................................185.3.1系统界面设计工具—GUI概述....................................................................185.3.2界面设计及使用说明....................................................................................186心得体会........................................................................................................................21参考文献...........................................................................................................................22附录...................................................................................................................................231引言随着信息时代、数字世界的到来，数字信号处理已成为一门极其重要的学科和技术领域。数字信号处理是将信号...
