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Performance Comparison Between DFT and FFT in Actual Application

QIU Kuan min,ZHAO Sheng kai (College of Electronics and Information Engineering, Northern Jiaotong University, Beijing 100044,China)  
This paper analyzes the calculation magnitudes of Discrete Fourier Transform(DFT)and its fast implementation method—Fast Fourier Transform(FFT), and makes a thorough comparison between their characteristics in actual application. In conclusion, it is some application cases and the DFT is superior to FFT.
【CateGory Index】: TN911.6
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