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matlab小波变换程序

于 2018-03-05 发布 文件大小:1KB
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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Fourier变换的困难问题,成为继Fourier变换以来在科学方法上的重大突破。(Wavelet transform (WT) is a new transform analysis method. It inherits and develops the idea of localization of short-time Fourier transform and overcomes the shortcomings that window size does not vary with frequency. It can provide a frequency-dependent The Time-Frequency window is ideal for time-frequency analysis and processing of signals. Its main feature is that by transforming some features that can fully highlight some aspects of the problem, the localization of the time (space) frequency can be analyzed, and the signal (function) can be gradually and multi-scale refined by the scaling operation, finally reaching the high frequency Time subdivision, frequency subdivision at low frequencies, can automatically adapt to the requirements of time-frequency signal analysis, which can focus on any details of the signal to solve the difficulties of Fourier transform has become a major breakthrough in the scientific method since Fourier transform.)

文件列表:

matlab小波变换程序\Mallat.m, 1923 , 2018-03-05
matlab小波变换程序\Untitled3.m, 521 , 2018-03-05
matlab小波变换程序\小波降噪.m, 447 , 2018-03-05
matlab小波变换程序, 0 , 2018-03-05

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  • Image_Fusion_Algorithm_with_Wavelet_Transform
    实现了对图像最基本的分解重构融合的较为简单的程序 (Realize the decomposition of the image reconstruction of the most basic integration of relatively simple procedures)
    2008-05-12 13:54:12下载
    积分:1
  • Wavelets
    说明:  小波变换技术与工程实践:图像的小波变换(MFC框架下)(Wavelet transform technology and engineering practice: Image Wavelet Transform (MFC framework))
    2008-09-08 23:18:34下载
    积分:1
  • 图像小波变换,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Fourier变换的困难问题,成为继Fourier变换以来在科学方法上的重大突破。(Image Wavelet Transform)
    2020-06-18 04:40:01下载
    积分:1
  • wnn
    说明:   这是一个用小波神经网络进行非线性函数逼近的例子,拟合效果非常好,保证能运行!有详细注释!我是参考《青岛海洋大学学报》 2001年第1期 一种基于BP算法学习的小波神经网络编写的,大家可以针对原文更好的理解我的程序!(This is a wavelet neural network with nonlinear function approximation example of fitting results is very good, guaranteed to run! Detailed Notes! I refer to Journal of Ocean University of Qingdao,2001 ,“a learning algorithm based on BP wavelet neural network ”, you will understand me better for program!)
    2010-03-18 22:13:54下载
    积分:1
  • FK_Transform 实现f-k
    说明:  实现f-k变换,功能强大,各种滤波处理,地震波等都能用(wavelet transformF -k transform, powerful, a variety of filtering, seismic waves can be used)
    2019-03-20 15:44:28下载
    积分:1
  • wavelet
    小波阈值法去噪的程序,其中有关于信噪比和均方根误差的公式(wavelet denoising)
    2011-05-24 20:47:45下载
    积分:1
  • xiaobo
    基于小波变换的信号去噪技术,简单的一维小波去噪程序(Signal de-noising based on wavelet transform technique, a simple one-dimensional wavelet denoising procedure)
    2014-02-24 12:55:42下载
    积分:1
  • Image-fusion-
    实现了基于小波变化的图像融合,并将融合结果显示出来(It realize the Image fusion based on wavelet transform and show the tesult)
    2011-04-30 10:56:39下载
    积分:1
  • wavelet_example
    小波变换的例子, 小波变换的例子, 小波变换的例子, 小波变换的例子,(wavelet transform example, wavelet transform example, Wavelet Transform example, wavelet tra nsform example,)
    2020-11-23 21:39:34下载
    积分:1
  • Matlab 梳状滤器程序
    心电图(ECG)是临床上诊断心血管疾病的重要方法。 数字滤波作为数字信号处理技术的重要组成部分,广泛应用于诸如信号分离、恢复、整形等多种场合中。为了使信号不失真及在可编程逻辑器件中容易实现,采用具有严格线性相位特性的FIR滤波器进行低通滤波(0-150Hz),用整系数梳状滤波器来去工频干扰及基线漂移,从而达到对心电信号进行预处理的目的。(Electrocardiogram (ECG) is an important method for clinical diagnosis of cardiovascular diseases. As an important part of digital signal processing technology, digital filtering is widely applied to many occasions, such as signal separation, recovery, shaping and so on. In order to make the signal undistorted and easy to be realized in programmable logic device, the FIR filter with strict linear phase characteristics is used for low pass filtering (0-150Hz), and the entire coefficient comb filter is used to get the interference of the power frequency and the baseline drift, thus the purpose of preprocessing the ECG signal is achieved.)
    2018-04-06 19:05:57下载
    积分:1
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