基于Matlab的卷积教学仿真设计——回音系统

Convolution Teaching Simulation Design Based on Matlab——Echo System

介绍了信号分析与处理课程中卷积原理及其内涵,从建模分析到Matlab实现,逐步引导学生利用卷积知识自制一个回音系统,加深了学生对卷积、冲激响应、系统的物理意义及本质的理解。采用Matlab自制回音系统仿真方法,以声音信号作为系统的激励和响应,使学生在现场就能听见自制的回音系统对自己声音的反馈,更深刻地体会了回音系统的含义,加深了对信号分析与处理课程的兴趣,提高了教学效果。

Fundamental and definition of convolution in the course of Signal Analysis and Process was introduced.From modeling analy-sis to realization by Matlab software,students can be led to design an echo system by themself,using the convolution technology, which can make the students grasp the essential of convolution,impulse response and concept of system.One proposed a method to make a simulated echo system by Matlab software,taking sound signals as the excitation and response of the system.From the experi-ment,students can hear the echo sound from systems made by their own,which can enhance their understanding to the concept of sys-tem,improve their interests to the course,and take good effect on teaching.