| “数字信号处理”课程中共轭对称性的探讨 |
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| 引用本文： | 童晓兵,徐以涛,张玉明.“数字信号处理”课程中共轭对称性的探讨[J].电气电子教学学报,2014(3):19-21. |
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| 作者姓名： | 童晓兵 徐以涛 张玉明 |
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| 作者单位： | 解放军理工大学通信工程学院,江苏南京210007 |
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| 基金项目： | 解放军理工大学通信工程学院重点教改科研项目（20110206） |
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| 摘 要： | 本文对"数字信号处理"课程中的共轭对称性进行了深入的分析和研究,从学生们所熟悉的函数的奇偶性的判定准则开始;接着采用类比的方法讨论了DTFT以及DFT的共轭对称性,避免了教材定义多和公式多的缺点;最后笔者举例讲解了对称性在实际工程中的应用。多年的教学经验表明,这种方法对于该知识点的教学有一定的帮助作用。
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| 关 键 词： | 对称性 共轭对称性 偶信号 奇信号 |
Analysis of Symmetry Properties in Digital Signal Processing Course |
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| TONG Xiao-bing,XU Yi-tao,ZHANG Yu-ming.Analysis of Symmetry Properties in Digital Signal Processing Course[J].Journal of Electrical & Electronic Engineering Education,2014(3):19-21. |
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| Authors: | TONG Xiao-bing XU Yi-tao ZHANG Yu-ming |
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| Affiliation: | (Institute of Communication Engineering, PLA Univ. of Sci. ＆ Tech. , Nanfing 210007, China) |
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| Abstract: | In this paper,the concept of symmetry properties in Digital Signal Process course is analyzed and researched deeply. Firstly,we review the concept of even function and odd function,which is familiar with for everyone. Then we discuss the symmetry properties of DTFT and DFT with an analog approach,which can avoid the shortcoming of multi definitions and multi formulas. Finally,we discuss the application of symmetry properties in the real work with an example. The teaching practice demonstrates that this solution is helpful for those students who are learning or teaching the symmetry properties. |
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| Keywords: | symmetry properties hermitian symmetry even signal component odd signal component |
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