可视化教学探讨系统零极点对滤波器性能影响

摘要

By using the rectangle impulse signal and voice signal, the change of amplitude-frequency characteristic and phase-frequency characteristics is vividly described. MATLAB has a powerful function of graphic compilation, which is designed to display dynamic real-time interface of the relationship between pole-zeros and frequency characteristics, and the students can obtain the pole-zeros effect by auditory and visual image.%借助脉冲信号和语音信号系统,形象地阐述了随着零极点变化系统幅频特性、相频特性的动态改变,并用Matlab中的图形函数设计数字系统零极点与频率特征关系的动态实时显示动画界面,进而使学生从听觉和视觉形象地体会到零极点对系统性能的影响.