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DFT(Discrete Fourier Transformation)是数字信号分析与处理如图形、语音及图像等领域的重要变换工具，直接计算DFT的计算量与变换区间长度N的平方成正比。当N较大时，因计算量太大，直接用DFT算法进行谱分析和信号的实时处理是不切实际的。快速傅立叶变换(Fast Fourier Transformation，简称FFT)使DFT运算效率提高1～2个数量级。其原因是当N较大时，对DFT进行了基4和基2分解运算。FFT算法除了必需的数据存储器ram和旋转因子rom外，仍
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matlab program to fing FFT of given sequence using decimation in time and decimation in frequency algorithms
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本程序是自己编写的频域抽取FFT程序，输入自然序，输出倒位序，用C语言实现。-The program is written in their own decimation in frequency domain FFT program, enter the natural order, the output inversion sequence, with the C language.
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TUTORIAL FOR DECIMATION IN FREQUENCY METHOD FOR FFT IMPLEMENTATION
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执行分裂基(split-radix)频率抽取(DIF)FFT算法,希望为同仁提供便利。-Implementation of split-based (split-radix) decimation in frequency (DIF) FFT algorithm in the hope that my colleagues facilitated.
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An Elementary Introduction to the Discrete Fourier Transform
1.1 ComplexNumbers
1.3 Analyzing the Series
1.5 Filtering a Signal
1.6 How Often Does One Sample?
1.7 Notes and References
1.2 Trigonometric Interpolation
1.4 Fourier Frequenc
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RTL Verilog code to perform Two Dimensional Fast Hartley Transform (2D-FHT) for 8x8 points.
Presented algorithm is FHT with decimation in frequency domain.
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该程序实现序列的快速傅里叶变换，并且它是属于基-2 FFT中的按频率抽选的FFT运算程序-The Fast Fourier Transform program sequence, and it belongs to the group-2 FFT decimation in frequency FFT operation program
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