基于GUI的数字信号处理课程演示系统研究

摘要

MATLAB guide is specialized in the graphical user interface environment for rapid development, using optional control of the guide tool to design a friendly interface, then in the corresponding button callback function in programming, designed to generate a typical digital signal. Then we deal with it, and the results show that the "digital signal processing" teaching in a number of important content of the demonstration system design. The designed system can log on and enter the main interface of the system, and then enter the corresponding sub module. The sub module totals seven blocks, were used to develop the design of discrete time signal, the design of discrete time system, the design of discrete linear convolution, the design of discrete Fourier transform, the design of discrete time signal in the Fourier transform, the design of system frequency response, the design of the FIR digital iflter and the design of IIR digital iflter. Among them, we focus on the design of discrete convolution and iflter design and presentation system. This system is helpful to the classroom teaching and can be able to give students intuitive feelings. Even people who not understand the MATLAB language programming can also master and understand it easily, and enjoy the dynamic sense of the picture, which can improve their learning interest in this area.%MATLAB中的Guide是专用于图形用户界面的快速开发环境，利用该Guide工具可以辅助数字信号课程教学。文章设计了基于GUI的数字信号处理课程演示系统，该系统可以登录界面，共有7块，分别开发了离散时间信号设计、离散时间系统设计、离散线性卷积设计、离散傅里叶变换设计、离散时间信号的傅里叶变换、系统频率响应设计，FIR数字滤波器的设计和IIR数字滤波器的设计。其中我们重点设计了离散卷积和滤波器设计演示系统。此系统可以辅助课堂教学，即便不懂MATLAB语言编程的人也很容易理解和掌握，享受画面的动态感，提高其对这方面的学习兴趣。