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Descr iption: Recent studies on Mathematical modeling of visual cortical cells [Kulikowski/Marcelja/Bishop:1982] suggest a tuned band pass filter bank structure. These filters are found to have Gaussian transfer functions in the frequency domain. Thu
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复数傅立叶变换的经典程序，希望对大家有帮助-complex Fourier transform of the classic procedure, we hope to help
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This award winning library is a C library for \"computing the Discrete Fourier Transform (DFT) in one or more dimensions, of both real and complex data, and of arbitrary input size.\" -This award winning library is a C library az r "computing th
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一堆数字信号处理的小程序,打个包发上来,上数字信号处理课写的,包括复倒谱、傅立叶变换、各种滤波器等~-heap of digital signal processing procedures for small, one packet onto fat, digital signal processing course was made, including the complex cepstrum, Fourier transform, various filter ~
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C语言实现各种常用的数字信号处理方法。比如复数运算、快速傅立叶变换FFT以及各种滤波算法-C language commonly used in various digital signal processing methods. For example, complex operations, FFT fast Fourier transform algorithm and the various filtering
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FFTW, a collection of fast C routines to compute the Discrete
Fourier Transform in one or more dimensions.The fftw/ directory contains the source code for the complex transforms,
and the rfftw/ directory contains the source code for the real tran
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1维和2维快速傅里叶变换，网上广为流传的英文版本,1-D and 2-D Fast Fourier Transform， Perform a 2D FFT inplace given a complex 2D array
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二维傅里叶变换,对图像进行二维傅里叶变换处理-Two-Dimensional Fast Fourier Transform
The purpose of this project is to develop a 2-D FFT program "package" that will be used
in several other projects that follow. Your implementation must have the capabilitie
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Radix-2 Fast Fourier Transform, real or complex sin/cos transform
-Radix-2 Fast Fourier Transform, real or complex sin/cos transform
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The frequency domain plays an important role in image
processing to smooth, enhance, and detect edges of images. Although
image data typically does not include imaginary values, the fast Fourier
transform (FFT) has been used for obtaining spect
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本实验要求开发一个2-D FFT程序包，使其可以应用于后续的几个实验。这个程序需要完成的功能是用因子（-1）^(x+y)乘以输入图像以实现滤波的中心变换，并还要求用一个实矩阵乘以一个复数矩阵通过调用两个图像的乘法程序来实现对应元素的相乘，同时计算反傅立叶变换，得到的结果乘以（-1）^(x+y)并取其实部最后计算频谱。实验中用到傅立叶变换的基本公式，通过实验我们可以更加深刻的理解频域滤波的基础。-The experiment calls for the development of a 2-D F
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复数的傅里叶变换与反变换，虚部与实部分开运算，并根据标志位判断是正变换还是反变换
-Complex Fourier transform and inverse transform, the imaginary part and real part of the open operation and in accordance with flag bit to determine is positive transformation or the inverse transform
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Program FFT.FOR
This FORTRAN program calculates the fast Fourier transform of a
timeseries (real and/or complex) or the inverse Fourier transform
of spectral components (real and/or complex). The FFT is based
on the algorithm given in Nu
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The real and imaginary components of a complex Gabor filter are phase sensitive,
i.e., as a consequence their response to a sinusoid is another sinusoid (see Figure
1.2). By getting the magnitude of the output (square root of the sum of squared
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This source code is the 32point FFT(Fast Fourier Transform) for Real Time sampling system (like PQ meter or Digital Relay). The complex computation is realized without complex.h in this code, based on only C. -This source code is the 32point FFT(Fast
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fftshift 比较实数和复数傅里叶变换频谱的不同，以及N取值对其频谱特点的影响。-fftshift more real and complex Fourier transform spectrum of different, and the N values of the characteristics of its spectrum.
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通过Matlab求出连续时间信号的傅立叶变换及编程绘制各种连续时间信号系统的时域波行，幅度谱以及相位谱-Fourier transform of continuous-time signal obtained through Matlab and programming time domain wave line to draw a variety of continuous-time signal system , the amplitude spectrum and phase spectr
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The Complex Fourier Transform
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在stm32f407上利用官方的库文件进行复数的傅里叶变换-The use of official documents in the library performs a complex Fourier transform stm32f407
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该程序是复数傅里叶变化和汉明窗参数的产生已经频谱搬移，程序简单易懂。-The program include complex Fourier transform and Hamming window parameter generation and spectrum shifting, this program are simple and easy to understand.
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