基于理论研究型和实验工程实践型的数字信号处理课程改革

Reform of Digital Signal Processing Course Based on the Theoretical Research Type and the Experimental Engineering Practice Type

《数字信号处理》这门课教学过程中的数学推导繁琐,物理意义多且难于理解,初学者对数学概念理解不透,导致对引申出的物理意义及工程概念认识不清,学生无法理解数字信号处理的实质和用途。针对以上情况,对《数字信号处理》这门课程进行了基于理论研究型和实验工程实践型的课程改革。理论教学的研究型改革主要从教学内容,教学手段和教学形式三个方面进行;实验教学的工程实践型改革引入工程实践的例子,将理论知识应用于实际信号,将知识内化,同时激发学生的学习兴趣;课程考核改革采用学习结果兼顾学习过程的方式。教学改革实践结果表明,《数字信号处理》这门课的教学质量得到极大提高,学生通过这门课程可以对实际工程信号进行预处理。

The teaching process of the course ＂Digital Signal Processing＂involves tedious mathematical deduction and numerous physical meanings difficult to understand,making beginner unable to get thorough understanding of mathematical concepts,resulting in their unclear understanding of derived physical meanings and engineering concepts and their being unable to understand the essence and usage of digital signal processing. Based on the above situation,the reform of the course Digital Signal Processing Course is conducted based on the theoretical research type and the experimental engineering practice type. The research-type reform of theoretical teaching is conducted in terms of teaching contents,teaching means and teaching forms; the engineering practice type of experimental teachingfocuses on the introduction of engineering practice,with theoretical knowledge used for actual signals,with knowledge internalized,students＇ learning interest stimulated. The course evaluation reform pays equal attention to learning results and learning process. The teaching reform practice result shows that the teaching quality of the course ＂Digital Signal Processing＂has been greatly improved and students can conduct pretreatment of actual engineering signals by learning this course.