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this is image frequency transform
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语音信号加密，通过语音信号频率的变换实现的语音加密解密算法-encrypted voice signal through the voice signal frequency transform voice encryption and decryption algorithm
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给定函数，变换到频域内，比较短时傅里叶变换大、小视窗和小波变换的区别，生成时频分析图,A given function, transform the frequency domain, more short-time Fourier transform, and a small window and the difference between wavelet transform to generate time-frequency analysis
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matlab 压缩包文件,基于时频分析的isar回波处理历程,基于时频分析的多分量现形调频信号处理,matlab compressed file, based on the time-frequency analysis of the ISAR echo processing course, based on the time-frequency analysis of multi-component FM signal processing edition
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In mathematics, the discrete-time Fourier transform (DTFT) is one of the specific forms of Fourier analysis. As such, it transforms one function into another, which is called the frequency domain representation, or simply the "DTFT", of the original
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S变换的matlab源码，并应用几个信号作为例子来说明怎么使用s变换以及s变换可以用来做些什么事情。s变换是时频分析领域中一个较新的内容，现在在信号处理，地震勘探，语音识别等领域都开始了对它的应用研究，是目前的一个热点。-S transform matlab source, and apply some signal as an example to illustrate how to use s and s transform transform can be used to do thing
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hht（希尔伯特黄变换）的matlab工具箱，其中包括时频分析工具箱-hht (Hilbert-Huang Transform) of the matlab toolbox, including the time-frequency analysis toolbox
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计算时间序列的快速傅里叶变换并画出时域和频域图，之前进行小波降噪。-Calculate the time series and fast Fourier transform time-domain and frequency domain plot diagram, before wavelet decomposition.
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改进拉普拉斯能量和的尖锐频率局部化
Contourlet 域多聚焦图像融合方法-Sum-modified-Laplacian-based Multifocus Image
Fusion Method in Cycle Spinning Sharp Frequency
Localized Contourlet Transform Domain
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Please run Demo_evaluation.m
This toolbox contains Matlab files that implement the image fusion criteria used in my paper
Qu Xiao-Bo, YAN Jing-Wen, XIAO Hong-Zhi, ZHU Zi-Qian. Image Fusion Algorithm Based on Spatial Frequency-Motivated P
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多用户多载波时频域cdma扩频的仿真，使用类编程。包含发送，信道，接收3个类。有选择用户数，联合扩频，调制，FFT变换，高斯信道和瑞利，解调，解扩，统计误码率等功能，减小仿真点数可使程序运行更快。-Multi-user multi-carrier spread spectrum cdma time-frequency domain of the simulation, the use of programming. Send contain, channel, receiving three c
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以C sharp編程快速富里葉變換頻率成分濾波頻率方位濾波-In C sharp programming Fast Fourier Transform frequency components filtered frequency direction filter
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频率变换 二维离散傅里叶变换 幅度图像和相位图像 频率方位滤波-Frequency transform two-dimensional discrete Fourier transform amplitude image and phase image frequency direction filter
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what is the DFT? The DFT is extremely important in the area of frequency (spectrum)
analysis because it takes a discrete signal in the time domain and transforms that signal into its
discrete frequency domain representation. Without a discrete-ti
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频率变换、二维快速傅里叶变换、频率成分滤波、频率方位滤波-Frequency transform, two-dimensional fast Fourier transform, a frequency component filtering, frequency filtering orientation
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this is image frequency transform,vevr good-This is the image frequency transform, vevr good
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Matlab source code for all of time frequency distribution: choi-Williams, short time fourier transform, Wigner Ville, Hilbert,.... Clear explain in english. All source code have been tested and WORKED!!!!!
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S Transform matlab code for time-frequency analysis
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The reason for doing the filtering in the frequency domain is generally because it is computationally faster to perform two 2D Fourier transforms and a filter multiply than to perform a convolution in the image (spatial) domain. This is particularly
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Time Frequency Toolbox matlab时频分析工具箱,里面有各种时频分析函数，用matlab实现的，小波变换，Gabor变化，短时傅里叶变换等等(AF Ambiguity function
AR Auto-regressive (filter or model)
ASK Amplitude shift keyed signal
BJD Born-Jordan distribution
BPSK Binary phase shift keyed signal
BUD
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