数字信号处理课程理论与实践教学的知识渗透与延伸
2014-04-21曹新莉田怡
曹新莉 田怡
摘 要 论文以学生在数字信号处理中所学习的数字滤波网络时域及变换域的数学原理为例,通过比较信号处理理论算法和实际硬件实现上的前后对应,使得学生容易从Z变换,离散傅里叶变换的理论学习容易得出其硬件实现的电路和程序实现。在学习数字信号处理算法的过程中,向学生渗透其数学公式对应的硬件电路和结构,可以使得在学习后续DSP应用课程时,轻松理解和设计。通过亲身经历的理论和实验学习,感受到信号处理课程体系在教学中的渗透与延伸。
关键词 数字信号处理 DSP 课程体系 渗透
中图分类号:G424 文献标识码:A
Knowledge Penetration and Extension of Digital Signal
Processing Theory and Practice Teaching
CAO Xinli, TIAN Yi
(School of Electrical and Information Engineering, Wuhan Institute of Technology, Wuhan, Hubei 430073)
Abstract This paper takes mathematical principles to the domain transform domain digital signal processing when students are learning in a digital filter network for example, correspond by comparing before and after signal processing algorithms and theory on the actual hardware implementation, allows students to easily from the Z transform, discrete Fourier transform learning theory easy to draw circuits and program their hardware implementation is achieved. In the study of digital signal processing algorithms in the process, to students whose mathematical formulas penetration corresponding hardware circuits and structures, can make subsequent DSP applications while learning courses, easy to understand and design. Theoretical and experimental study by personal experience, feel the penetration and extension of signal processing system in the teaching curriculum.
Key words digital signal processing; DSP; course system; penetration
在电子信息工程学科中,数字信号处理的实现和仿真课程已经很好地融合进来。很多高校的信息类专业相继开设了数字信号处理,DSP应用的相关理论课程,并开设了matlab信号分析与处理等课程设计和实验。如何在理论和实践课程教学中完成对数字信号处理知识的渗透于延伸,让学生更好的认识到数字信号处理技术的理论和实践和有机结合呢?
1 数字信号处理的作用
数字信号处理是研究把信号用数字或符号表示成序列,通过计算机或通用(专用)信号处理设备,用数字的数值计算方法处理,提取有用信息便于应用的客观规律性。
在信号处理中,很多信号比如声音信号,在时域上看是杂乱无章的,没有任何规律的,当转化成频域信号后,很容易看出来信号的相关性质,对信号的处理也更为方便。……
