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自己的小波包程序(含消噪、能量特征提取、信号重构等),希望对大家有帮助-Wavelet packet procedure (including de-noising, the energy feature extraction, signal reconstruction, etc.), we hope to help
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这是自己编的卷积型小波包的分解程序,用于机械故障特征提取,实现了克服Mallat算法数据量减少和产生虚假频率的缺陷-Own series of convolution type of wavelet packet decomposition procedures for mechanical fault feature extraction to overcome the defects of the the Mallat algorithm decrease in the amount of
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小波包提取滚动轴承故障能量特征的matlab程序,大家只要把采集的滚动轴承振动信号数据放入程序中即可使用,希望对大家有所帮助。-Bearing Fault wavelet packet energy feature extraction matlab program, we just put a rolling bearing vibration signal collected data into the program to use, we want to help.
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小波包能量巨程序(已做归一化处理,用于对振动信号提取特征)-Wavelet packet energy giant program (normalization process has been done for the vibration signal feature extraction)
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3.1语音信号的同态处理和倒谱分析30
3.1.1同态处理的基本原理30
3.1.2复倒谱和倒谱31
3.2离散余弦变换34
3.3Mel频率倒谱系数的分析37
3.3.1Mel滤波器组37
3.3.2MFCC特征参数提取38
3.4小波和小波包变换43
3.4.1小波变换43
3.4.2小波包变换44
3.4.3小波包算法45
3.4.4MATLAB中一维小波和小波包变换函数46
3.4.5MATLAB语音信号小波和小波包变换的例子49
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首先根据高斯白噪声频率充满整个频带的特性,通过双树复小波包变换对高斯白噪声进行分解,利用频带能量泄漏的定量分析方法,验证了双树复小波包变换具有较低的频带能量泄漏特性;其次利用双树复小波包变换逐层分解信号,对每层分解所得分量求其FFT谱的峭度,得到基于双树复小波包变换的谱峭度图,根据图中峭度最大的原则,可以自动准确的选择信号分解最佳层数和最佳分量;最后将基于双树复小波包变换的谱峭度图的故障诊断方法应用于实际工程中,对齿轮故障振动信号进行分析,选择最佳分解层数和分量后利用希尔伯特包络解调,有效准确地
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这是一个基于小波包能量特征提取的小波分析。-Wavelet analysis based on wavelet packet energy feature extraction
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Harr小波具有紧支撑、零调和性和优良的正交性等优点,因此选择它作为小波变换的基函数。对采样数据进行4层小波包变换得到16维的特征样本。-Harr wavelet has compact support, zero reconcile and excellent orthogonality, etc., so choose it as the base function of wavelet transform. 4 layers of sampled data wavelet packet t
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小波包能量程序,支持向量机组分类时,特征的提取,小波包能量-Wavelet packet energy program, support vector machine classification, feature extraction, wavelet packet energy
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小波包分析结合能量算法实现特征信号的提取,其中还包含用于测试的轴承数据-Wavelet packet analysis combined with the energy of signal feature extraction algorithm, which also contains the data for bearing test
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此程序为小波包变换结合和能量谱分析提取特征频率-This procedure for the analysis of wavelet packet transform and energy spectrum feature extraction of frequency combination
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城轨车辆轮对踏面故障在线监测系统,基于振动检测法的轮对踏面故障监测系统,通过傅里叶变换、小波包分析对釆集到的振动信号进行分析获得信号的特征,研究了基于短时能量判断的踏面故障特征提取算法。-On line monitoring system for wheel tread of urban rail vehicles, based on the vibration detection method of wheel tread fault monitoring system, through th
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一种对心音信号特征提取的小波包算法的研究。-A study of heart sound signal feature extraction wavelet packet algorithm.
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是路径规划的实用方法,小波包分析提取振动信号中的特征频率,在MATLAB中求图像纹理特征。- Is a practical method of path planning, Wavelet packet analysis to extract vibration signal characteristic frequency, In the MATLAB image texture feature.
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是学习PCA特征提取的很好的学习资料,光纤无线通信系统中传输性能的研究,小波包分析提取振动信号中的特征频率。- Is a good learning materials to learn PCA feature extraction, Fiber Transmission wireless communication system performance, Wavelet packet analysis to extract vibration signal characteristic fre
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在MATLAB中求图像纹理特征,小波包分析提取振动信号中的特征频率,包括脚本文件和函数文件形式。- In the MATLAB image texture feature, Wavelet packet analysis to extract vibration signal characteristic frequency, Including scr ipt files and function files in the form.
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一维信号特征提取参考程序,正常信号和故障信号特征的提取,开发环境为MATLAB。是使用小波分解处理信号的参考,使用了小波包三层分解。-One dimensional signal feature extraction reference program, normal signals and fault feature extraction, the development environment of MATLAB.Is the use of wavelet decomposition pro
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STM32制作的MP3的全部资料,车牌识别定位程序的部分功能,小波包分析提取振动信号中的特征频率。- STM32 all the information produced by the MP3, Part of the license plate recognition locator feature, Wavelet packet analysis to extract vibration signal characteristic frequency.
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小波包分析提取振动信号中的特征频率,模拟数据分析处理的过程,用于信号特征提取、信号消噪。- Wavelet packet analysis to extract vibration signal characteristic frequency, Analog data analysis processing, For feature extraction, signal de-noising.
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小波包分析提取振动信号中的特征频率,车牌识别定位程序的部分功能,人脸识别中的光照处理方法。- Wavelet packet analysis to extract vibration signal characteristic frequency, Part of the license plate recognition locator feature, Face Recognition light treatment method.
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