FFT2D

所属分类:数学计算
开发工具:Visual C++
文件大小:513KB
下载次数:13
上传日期:2011-05-23 14:54:52
上 传 者mmb
说明:  2dFFT的奈奎斯特频率为 ,( 为采样间隔)实际上的FFT变换点数要求为2的n次幂,各点所对应的频率是从 到 ,求出 后,可以用 ,这里N为FFT变换的点数。如变换点数为2048,由于对称性,实际有用的点数为1024个。 在该程序中,做完富氏变换后,已经将数据按照频率从0到 到0的顺序排好。 在运行结果中,只需存储左下角的1/4区域的数据即可。
(2dFFT of the Nyquist frequency, (for the sampling interval) is actually the FFT, the n number of points required for the power of 2, the frequency corresponding to each point is to, find, you can use the FFT, where N points. Such as the transformation point to 2048, due to the symmetry, the actual useful points to 1024. In the process, done after the Fourier transform has the data in accordance with the frequency range from 0 to 0 in order to line up. In the run results, only the lower left corner of the store 1/4 of regional data can be.)

文件列表:
FFT2D (0, 2011-05-23)
FFT2D\CalFFT2d.cpp (2418, 2008-05-12)
FFT2D\csp.h (2847, 2008-05-12)
FFT2D\Debug (0, 2011-04-25)
FFT2D\Debug\01884M21.DAT (98816, 1992-01-01)
FFT2D\Debug\CalFFT2d.obj (2980, 2008-05-12)
FFT2D\Debug\fft.obj (3570, 2008-05-12)
FFT2D\Debug\FFT2D.exe (200790, 2008-05-12)
FFT2D\Debug\FFT2D.obj (6523, 2008-05-12)
FFT2D\Debug\FFT2D.pdb (386048, 2008-05-12)
FFT2D\Debug\figured.m (144, 2008-05-19)
FFT2D\Debug\out.txt (206459, 2008-05-12)
FFT2D\Debug\StdAfx.obj (2289, 2008-05-12)
FFT2D\Debug\vc60.pdb (53248, 2008-05-12)
FFT2D\fft.cpp (1913, 2008-05-12)
FFT2D\fft.h (260, 2008-05-12)
FFT2D\FFT2D.cpp (2970, 2008-05-12)
FFT2D\FFT2D.dsp (5125, 2008-05-12)
FFT2D\FFT2D.dsw (535, 2008-05-12)
FFT2D\fft2d.h (199, 2008-05-12)
FFT2D\FFT2D.ncb (50176, 2008-05-18)
FFT2D\FFT2D.opt (217088, 2008-05-18)
FFT2D\FFT2D.plg (1953, 2008-05-12)
FFT2D\out.txt (206459, 2008-05-18)
FFT2D\StdAfx.cpp (292, 2008-05-12)
FFT2D\StdAfx.h (667, 2008-05-12)
FFT2D\关于FFT的说明.doc (141824, 2008-05-19)
FFT2D\关于FFT的说明.docx (80089, 2008-05-12)

======================================================================== CONSOLE APPLICATION : FFT2D ======================================================================== AppWizard has created this FFT2D application for you. This file contains a summary of what you will find in each of the files that make up your FFT2D application. FFT2D.dsp This file (the project file) contains information at the project level and is used to build a single project or subproject. Other users can share the project (.dsp) file, but they should export the makefiles locally. FFT2D.cpp This is the main application source file. ///////////////////////////////////////////////////////////////////////////// Other standard files: StdAfx.h, StdAfx.cpp These files are used to build a precompiled header (PCH) file named FFT2D.pch and a precompiled types file named StdAfx.obj. ///////////////////////////////////////////////////////////////////////////// Other notes: AppWizard uses "TODO:" to indicate parts of the source code you should add to or customize. /////////////////////////////////////////////////////////////////////////////

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