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Description: matlab下对图像进行fft变换，平滑，锐化，中心化傅立叶正变换得到大正方形，小正方形，斜正方形。对其频谱进行中心化处理。图像的平滑和锐化，利用拉普拉斯算子。-Matlab right image fft transform, smoothing, sharpening, is the center of the Fourier transform large square, small square, ramp square. Its spectrum treatment center. Image sharpening and smoothing, using Laplace operator.
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Size: 1032192 |
Author: zidan |
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Description: 1．通过实验加深对快速傅立叶变换（FFT）基本原理的理解。
2．了解FFT点数与频谱分辨率的关系，以及两种加长序列FFT与原序列FFT的关系。
离散傅里叶变换（DFT）和卷积是信号处理中两个最基本也是最常用的运算，它们涉及到信号与系统的分析与综合这一广泛的信号处理领域。实际上卷积与DFT之间有着互通的联系：卷积可化为DFT来实现，其它的许多算法，如相关、滤波和谱估计等都可化为DFT来实现，DFT也可化为卷积来实现。-1. Deepen the experimental fast Fourier transform (FFT) the basic tenets of understanding. 2. Understand the FFT spectrum and points of the resolution, and two extended sequence with the original FFT FFT relations. Discrete Fourier Transform (DFT) and the convolution of two signal processing is the most commonly used basic arithmetic, they relate to the signal and system analysis and synthesis of the wide range of signal processing field. DFT actually convolution and interoperability between contact : DFT into convolution can be achieved in many other algorithms, If relevant, filtering and spectral estimation could be achieved as DFT, DFT into convolution can be achieved.
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Size: 3072 |
Author: 深蓝 |
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Description: 信号与系统基础知识包括连续信号与模型、离散信号与模型；常用信号变换包括Z变换、Chirp Z变换、FFT变换、DCT变换和Hilbert变换等；离散系统结构包括IIR、FIR和Lattice结构；IIR滤波器设计包括模拟和数字低通、高通、带通与带阻滤波器设计，以及基于冲激响应不变法和双线性Z变换法的IlR滤波器设计等；FIR滤波器设计包括基于窗函数、频率抽样法和切比雪大逼近法的FIR滤波器设计；平稳信号分析包括经典功率谱估计、基于参数模型的功率谱估计和基于非参数模型的功率谱估计；非平稳信号分析包括STFT变换、Gabor展开、Wigner-Ville分布与Choi-Williams分布；非高斯信号分析包括基于非参数法的双谱估计、基于参数模型的双谱估计，以及双谱估计的应用；信号处理的GUI实现包括滤波器设计与分析的FDATool工具和滤波器设计与信号分析的SPTool工具。-signals and systems based on knowledge, including continuous signal with the model, discrete signal and model; Common signals include transform Z transform, chirp Z-transform, FFT transform. DCT and Hilbert transform; Discrete system architecture including IIR, FIR and Lattice structure; IIR filter design, including analog and digital low-pass, high-pass, band-pass and band stop filter design, Based on the impulse response of the same law and bilinear Z transform the IlR filter design; FIR filter design including on the basis of the window function, frequency sampling and snow all over the big approximation of FIR filter design; stationary signal analysis include classical power spectrum estimation, Based on the model parameters of the power spectrum estimation and non- parametric model b
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Size: 101376 |
Author: james |
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Description: 这是一个关于FFT快速算法的matlab程序，希望在大家学习数字信号处理时能有所帮助。-This is a fast FFT algorithm on the Matlab procedures, We hope that in the study of digital signal processing, can be helped.
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Size: 1024 |
Author: sun |
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Description: FFT和Hilbert变换工具包，但是和MATLAB相比要慢些-FFT and Hilbert transform tool kits, and MATLAB slower than some
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Size: 12288 |
Author: |
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Description: the convert the audio from the cep unit fft to mel spectrum-the convert the audio from the probes unit fft t o mel spectrum
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Size: 2048 |
Author: 雷柏英 |
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Description: 实现快速傅立叶变换的程序，是matlab下的M文件，内部还和含有一个介绍PDF文件-fast Fourier transform procedures, the Matlab M paper Internal also contains an introduction and PDF files
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Size: 147456 |
Author: 何伟兵 |
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Description: Lyapunov指数的计算方法实现 matlab-Lyapunov exponent calculation methods Matlab
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Size: 5120 |
Author: Jiandong Yang |
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Description: matlab图像处理的一些命令,如applylut,提取二进制图像的轮廓的bwmorph,识别强度图像中的边界的edge,进行二维快速傅里叶变换的fft2等等.-Matlab image processing some orders, such as applylut. extract the binary image of the contours of the bwmorph identify intensity image of the border edge, 2D Fast Fourier Transform fft2 and so on.
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Size: 427008 |
Author: ruan pingfan |
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Description: 信号处理，将采集数据显示，FFT变换，积分，找出峰值并显示-signal processing, data acquisition, the FFT transform, integration, and to identify the peak show
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Size: 95232 |
Author: lxq |
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Description: 这是一个用Matlab编写的程序集，可以实现一些声音和图象的处理。声音的处理有：LPC，FFT，共振峰，频谱等。图象的处理也有很多，都有源代码和参考代码。还有非常友好的界面。-This is a Matlab prepared by the procedure set, can achieve some of the voices and image processing. Voice processing : LPC, FFT, formants and spectrum. Image processing there are many, have the source code and reference code. There are extremely friendly interface.
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Size: 13715456 |
Author: lijin |
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Description: 这是一个经典的把matlab应用于DFT的例子,适合于初学者-This is a classic application of Matlab put DFT example, suitable for beginners
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Size: 1024 |
Author: |
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Description: 这是一种基于DSP56001的FFT算法,希望能对大家有用.-which is based on the DSP56001 the FFT algorithm, we hope to right useful.
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Size: 107520 |
Author: 梁艺潇 |
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Description: 利用matlab实现fft图形处理，小程序源-achieve fft using Matlab graphics processing, small program source
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Size: 915456 |
Author: 杨过 |
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Description: 图像压缩源程序，通过matlab实现的很好的源程序。-image compression source, through the realization of Matlab good source.
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Size: 203776 |
Author: 杨过 |
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Description: 快速傅立叶变换的matlab实现，一维情况下利用蝶形算法实现-Fast Fourier Transform Implementation of Matlab, a dimension of the use of butterfly Algorithm
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Size: 1024 |
Author: 江边漫步 |
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Description: 二维情况下实现快速傅立叶变换，利用一维情况下的FFT实现-under 2D of the fast Fourier transform, using a dimension of the FFT
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Size: 2048 |
Author: 江边漫步 |
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Description: GPS 捕获程序,采用FFT搜索算法,搜索1024个码相位.-GPS capture procedures, using FFT algorithm, search phase code 1024.
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Size: 121856 |
Author: Jerry |
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Description: 1.了解离散傅立叶变换及离散余弦变换的基本原理；
2.掌握进行FFT及逆变换的方法；
3.了解图像在频域中处理方法，应用MATLAB语言作简单的低通滤波器。
-1. Understand the discrete Fourier transform and discrete cosine transform the basic principle; 2. master for FFT and inverse transform; 3. understanding of image processing in the frequency domain method, MATLAB language for simple low-pass filter.
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Size: 16384 |
Author: 小春 |
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Description: 这是一个完成各种数字图像水印的算法的程序，里面也实现了dct，fft，以及水印的改进算法，程序移植性好-This is a complete range of digital image watermarking algorithm procedure, which also realize the dct, fft, as well as to improve the watermarking algorithm, transplantation procedures and good
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Size: 53248 |
Author: 粘永健 |
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