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使用小波包变换分析两个信号的特征向量和各频率成分的功率谱-the analysis of two signals eigenvector and power spectrum using wavelet-packet transform
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采用小波包变换去除脉搏波的基线漂移和公平干扰 效果较小波变换更好-Wavelet packet transform to remove baseline drift and pulse wave interference effect of smaller transform fair better
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小波包变换分析信号的MATLAB程序
小波分析信号去噪
小波分解与重构经典程序-Wavelet packet transform analysis of signals in MATLAB program Signal de-noising wavelet decomposition wavelet analysis and reconstruction classic program
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这是小波包变换算法程序,有利于方便大家使用-This is the wavelet packet transform algorithm program will help facilitate the use of all
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本书是“MATLAB应用技术”系列丛书之一,以最新推出的MATLAB中的小波分析工具箱Wavelet Toolbox 3.0版本为基础。全书共分为三部分,第1部分着重介绍了小波理论基础,包括小波基础知识、连续小波变换、离散小波变换、多分辨率分析与正交小波变换、小波变换和多采样滤波器组、二维小波变换与图像处理及小波包的基本原理等;第2部分重点说明了小波分析工具箱的详细使用方法,包括图形用户接口、小波通用函数、一维小波变换的MATLAB实现、二维小波变换的MATLAB实现、小波包变换的MATLAB实
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Function to plot the Region of convergence for Suprathreshold stochastic resonance+Translation invariant wavelet packet transform detector for transient signals. Hypotheses:
Ho : x[n] = w[n] i.e. signal absent
H1 : x[n] = s[n] + w[n] i.e. signal
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Function to plot the region of convergence for a stochastic resonance detector followed by a translation invariant wavelet packet transform detector for transient signals in shallow oceans.
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matlab 的小波变换处理函数,非常实用-in matlab expierenment prepeared the wavelet packet transform procedures, very useful
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小波包在信号时频分析中的应用,计算得而他信号小波变换的时频面-Wavelet packet time-frequency signal analysis, he calculated wavelet transform time-frequency plane
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直扩系统中,非抽取小波包变换抑制窄带干扰。-narrowband interference suppression with the wavelet packet transform.
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实现9/7小波正反变换
注1: 采用标准正交方法,对行列采用不同矩阵(和matlab里不同)
注2: 为了保证正交,所有边界处理,全部采用循环处理
注3: 正交性验证,将单位阵带入函数,输出仍是单位阵(matlab不具有此性质)
注4: 此程序是矩阵实现,所以图像水平分量和垂直分量估计被交换位置
注5: 此程序实现的是类小波(wavelet-like)变换,是介于小波包变换与小波变换之间的变换
注6: 此程序每层变换相对原图像矩阵,产生的矩阵都是正交阵,这和小
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小波包变换的改进单子带重构,参考书籍杨建国著《小波分析及其工程应用》-Improved Subband Reconstruction of Wavelet Packet Transform.
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一种利用小波包变换进行盲信号分离的程序。-Program for blind source separation using wavelet packet transform.
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小波包变换的MATLAB程序,快速傅立叶变换频谱分析-Wavelet packet transform MATLAB program, fast Fourier transform spectrum analysis
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小波包变换程序
数字信号处理
示例程序
对小波包用于信号处理有帮助-Wavelet packet transform program
Modern digital signal processing
The sample program
For the benefit of the wavelet packet is used for signal processing
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语音信号在其他变换域中的分析技术和特性,语音信号的同态处理和倒谱分析,离散余弦变换,小波和小波包变换-Speech signal analysis technologies and features in other transform domain, homomorphic processing voice signals and cepstrum analysis, discrete cosine transform, wavelet and wavelet packet transform
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通过实验表明小波包变换能精确地从谐波信号中分离出基波,并能根据需要分离出任意谐波信号,是一种很好的电力系统谐波分析工具。-Experiments show that wavelet packet transform can accurately isolated in harmonic signal wave, and can according to need to separate out any harmonic signals,It is a kind of very good pow
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基于小波包变换对信号进行分解,提取机器轴承故障的特征信号进行损伤识别,(The signal is decomposed based on wavelet packet transform, and the characteristic signals of machine bearing faults are extracted to identify the damage,)
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1. 构造含噪音的振动信号 faultysignal_with_noise,
2. 利用小波变换 Wavelet transform去噪,小波包 Wavelet packet transform 变换去噪,
3. 把两种去噪后的信号,分别用STFT ,FFT ,小波变换三种方法进行错误诊断(1. the vibration signal faultysignal_with_noise, which contains noise, is constructed.
2. using wavelet
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能够实现双树复小波包变换,有一段仿真例子可以供大家参考(Realization of dual tree complex wavelet packet transform)
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