基于语音信号的“数字信号处理”课程案例教学研究

Research on Case Teaching of Digital Signal Processing Based on Speech Signals

"数字信号处理"是电类专业重要的专业基础课,理论性和实践性都很强,教学中如何做到理论与实际相结合,一直是课堂教学的重点和难点。以语音信号为研究对象,MATLAB为实验平台,对信号的频谱分析、数字滤波器设计等重要知识点进行了仿真案例设计,并给出了仿真结果。通过案例教学,让学生直观地领悟到了频谱的概念,体会到了严谨的数学推理的实际应用过程,激发了学生的学习兴趣,提高了学生的工程应用能力。

Digital Signal Processing is an important fundamental course of electrical specialty.It is very important both in theory and practice.How to combine theory with practice has been the emphasis and difficulty in classroom teaching.Using speech signal as the research object and MATLAB as the experimental platform,it designed a simulation case for the important knowledge points such as signal frequency spectrum analysis and digital filter design,and gave the simulation results.Through the case teaching,students would intuitively understand the concept of spectrum,and realize the rigorous mathematical reasoning applied to the actual process,which also arouse the students′interest in learning,and improve the students′engineering application ability.