| DFT及其在FIR滤波应用中的有关问题 |
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| 引用本文： | 王传旭,张祥光.DFT及其在FIR滤波应用中的有关问题[J].青岛科技大学学报,2003,24(Z1):131-133. |
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| 作者姓名： | 王传旭 张祥光 |
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| 作者单位： | 王传旭（青岛科技大学,信息与控制工程学院,山东,青岛,266042）
张祥光（青岛科技大学,信息与控制工程学院,山东,青岛,266042） |
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| 摘 要： | 根据时域和频域抽样定理,从时域和频域的图形变换角度证明了DFT物理意义,并结合图形推导了其定义式。同时着重从FIR滤波应用的角度对DFT(Discrete FourierTransform)算法在信号分析中产生的误差、频率分辨率、尾部补零等有关问题展开讨论。
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| 关 键 词： | DFT 时域抽样定理 频域抽样定理 频率分辨率 |
| 修稿时间： | 2003年6月17日 |
DFT and Its Relevant Problems in FIR Application |
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| WANG Chuan-xu,ZHANG Xiang-guang.DFT and Its Relevant Problems in FIR Application[J].Journal of Qingdao University of Science and Technology:Natutral Science Edition,2003,24(Z1):131-133. |
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| Authors: | WANG Chuan-xu ZHANG Xiang-guang |
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| Abstract: | According to time domain sample theory and frequency domain sample theory, the figure changes from time domain to frequency domain were used to illustrate the process of DFT(Discrete Fourier Transform) and its physical meaning. Finally, from application aspect, its relevant questions such as frequency resolution, error and filling zero at end of a discrete- time signal were discussed in detail. |
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| Keywords: | DFT sample theorem in time domain sample theorem in frequency domain frequency resolution |
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