Mathcad在“信号与系统”辅助教学中的应用

Application of Mathcad in the Assitant Teaching of Signals and Systems

介绍了将Mathcad软件用于信号与系统教学中 ,以周期方波频谱分析和矩形方波通过理想低通滤波器的响应求解为例 ,阐述了编程思想和程序编写及动画的实现过程。动画中的系列可视化图形 ,能够模拟上述频谱和响应随帧变量变化而变化的过程。播映效果表明 ,动画表现形式能够使抽象的概念形象化 。

This paper uses Mathcad software in teaching of the course of 'Signals and Systems', introduces the design consideration and animation of the spectrum analysis for the periodic rectangular signal and the response to the rectangular signal when exciting an ideal low-pass filter. The series visual waveforms can simulate the variance of spectrum and response with FRAME. Animation can help to visualize the abstract concept, and get easy understanding of 'Signals and Systems' theory.