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Using the function to sample the voice signal and achieve fast Fourier transform in MATLAB, and then get the signal characteristics of the spectrum.Filtering the signal from the filter,and then playback the signal of voice
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快速傅立叶变换（FFT）算法实现
将DFT算法与FFT算法计算时间进行比较，分析二者的效率和精确差异。-Fast Fourier Transform (FFT) algorithm to DFT algorithm and FFT algorithm for computing time to carry out comparative analysis between the two differences in the efficiency and precision.
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FRFT时频变换代码（参考算法：H.M. Ozaktas, M.A. Kutay, and G. Bozdagi.Digital computation of the fractional Fourier transform.IEEE Trans. Sig. Proc., 44:2141--2150, 1996.）-FRFT transform time-frequency code (reference algorithm: HM Ozaktas, MA Kutay, and G. Bozda
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Fast Fourier Transform
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快速傅里叶变换， 频谱的泄露，混叠误差实例的matla程序。-Fast Fourier Transform: In order to reduce the number of DFT calculations of a fast algorithm.
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Computing-the-2-D Discrete-Fourier-Transform
IEEE article
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sample code to show how to perform digital filtering using fast fourier transform
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this about DTFT.DTFT s matlab code and it is for Discrete time fourier transform.-this is about DTFT.DTFT s matlab code and it is for Discrete time fourier transform.
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This program is open source code of fast Fourier transform in matlab.
Where y is the input argument and p is the normalized size of the input. Let
y = [1 2 3 4 ]
x= length(y)
m= log2(x)
p= ceil(m)
To call the function use
ft2(y,p
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Matlab Fast Fourier Transform FFT
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Matlab Fast Fourier transform
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fast fourier transform (FFT) code in MatLab
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分数阶傅立叶变换的matlab程序，对chirp信号进行的分数阶傅立叶变换-Fractional Fourier Transform
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語音信號是基於時間軸上的一維數位信號，在這裏主要是對語音信號進行頻域上的分析。在信號分析中，頻域往往包含了更多的資訊。對於頻域來說，大概有8種波形可以讓我們分析：矩形方波，鋸齒波，梯形波，臨界阻尼指數脈衝波形，三角波，餘旋波，余旋平方波，高斯波。對於各種波形，我們都可以用一種方法來分析，就是傅立葉變換：將時域的波形轉化到頻域來分析。-Voice signal is based on the timeline of one-dimensional digital signal, where mai
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this file contains some m-files about calculating the fractional fourier transform and isar processig
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有关分数阶离散傅里叶变换的程序以及文章，文章详细介绍了离散傅里叶变换，有助于读者的学习-Fractional Fourier transform on the procedures and articles, the article introduces the discrete Fourier transform, to help readers learn
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分数阶傅里叶变换，一维的分数阶傅里叶变换matlab程序-Fractional Fourier transform
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信号处理中简单傅里叶变换的matlab程序(Matlab program of simple Fourier transform in signal processing)
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Fourier Transform load and show image result
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基于黎曼和，已知傅里叶计算的公式，积分计算傅里叶级数(Fourier transform based on Riemann sum.)
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