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短时傅里叶变换的一些简单的演示,其中有矩形窗和高斯窗-some demos for the short time fourier transform
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Produce lfm,tfm,sfm,pfm,bpsk,qpsk cw ledai signal .Use short-time Fourier transform arrive at the instantaneous frequency.-Produce lfm, tfm, sfm, pfm, bpsk, qpsk cw ledai signal. Use short-time Fourier transform arrive at the instantaneous frequency.
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A novel texture-based Automatic Fingerprint Authentication System (AFAS) is proposed. A fingerprint image is preprocessed to enhance the image by Short Time Fourier Transform (STFT) analysis. Then, three sets of invariant moment features, as a kind o
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用matlab实现的短时傅里叶变换和小波变换。有文档-Using matlab to achieve short-time Fourier transform and wavelet transform. A document
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令x(n)=5exp(j*0.15*n*n)+6exp(j*300n-j*0.15*n*n) ,w(n)为高斯窗函数。试用matlab软件,取不同长度的窗函数,分别求x(n)离散短时傅里叶变换,并进行信号重构。-ORDER x (n) = 5exp (j* 0.15* n* n)+6exp (j* 300n-j* 0.15* n* n), w (n) for the Gaussian window function. Trial Matlab software, take different l
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matlab编程的短时傅里叶变换典型实例,供大家参考。-short-time Fourier transform matlab programming typical examples for your reference.
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一个简单的调用Matlab stft函数进行短时傅里叶变换的示例程序-A simple function call Matlab stft short time Fourier transform of the sample program
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短时傅里叶变换的matlab函数,有助于理解算法原理-Short-time Fourier transform matlab function, help to understand the algorithm principle
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时频信号分析,短时傅里叶变换,matlab实现工具包-time-frequency signal analysis—short time fourier transform—tool kit(in matlab)
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短时傅里叶变换MATLAB代码,主要是用于非线性信号分析-Short-time Fourier transform MATLAB code, mainly for nonlinear signal analysis
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“Progressive Image Denoising”文章的matlab代码,通过双边滤波器逐次降低图像尺度,在不同尺度上进度去噪滤波。
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小波变换(wavelet transform,WT)是一种新的变换分析方法,它继承和发展了短时傅立叶变换局部化的思想,同时又克服了窗口大小不随频率变化等缺点,能够提供一个随频率改变的"时间-频率"窗口,是进行信号时频分析和处理的理想工具。它的主要特点是通过变换能够充分突出问题某些方面的特征,能对时间(空间)频率的局部化分析,通过伸缩平移运算对信号(函数)逐步进行多尺度细化,最终达到高频处时间细分,低频处频率细分,能自动适应时频信号分析的要求,从而可聚焦到信号的任意细节,解决了
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一种新的瞬时频率估计方法,用到了同步压缩短时傅里叶变换的高阶形式(This MATLAB package is a collection of scr ipts allowing to generate figures in the paper [1]. This paper puts forward a generalization of the short-time Fourier-based Synchrosqueezing Transform using a new local esti
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短时傅里叶变换的MATLAB实现代码,有效完成时频分析(matlab implementation code of short-time Fourier transform to effectively complete time-frequency analysis)
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