| “数字信号处理”课程中线性相位的探讨 |
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| 引用本文： | 童晓兵,徐以涛,蔡跃明.“数字信号处理”课程中线性相位的探讨[J].电气电子教学学报,2012,34(3):99-100,105. |
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| 作者姓名： | 童晓兵 徐以涛 蔡跃明 |
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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课程项目 |
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| 摘 要： | 线性相位是"数字信号处理"中难以理解的问题之一。本文首先利用Matlab直观地给出了线性相位和非线性相位对信号所造成的影响,接着介绍了传统的线性相位的教学方法,然后提出了一种新的教学方法,即利用序列的离散时间傅里叶变换的共轭对称性来理解线性相位。这种方法不但可以加深学生们对线性相位条件的理解,而且可避免复杂的数学理论推导,具有较好的教学效果。
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| 关 键 词： | 线性相位 非线性相位 共轭对称性 |
Analysis of Linear Phase in Digital Signal Processing Course |
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| TONG Xiao-bing,XU Yi-tao,CAI Yue-ming.Analysis of Linear Phase in Digital Signal Processing Course[J].Journal of Electrical & Electronic Engineering Education,2012,34(3):99-100,105. |
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| Authors: | TONG Xiao-bing XU Yi-tao CAI Yue-ming |
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| Affiliation: | (Institute of Communication Engineering,PLA Univ.of Sci.& Tech.,Nanjing 210007,China) |
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| Abstract: | Linear-phase is one of the difficulties in the course of Digital Signal Processing.Firstly,the effect of nonlinear-phase system and linear-phase system is analyzed in this paper.Secondly,the traditional teaching method is introduced.Finally,a new teaching method based on the conjugation symmetry properties of DTFT is produced,it can reduce the complexity of theoretic derivate and help the students understand the concept of linear-phase,and improve the teaching quality. |
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| Keywords: | linear-phase nonlinear-phase conjugation symmetry properties |
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