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于 2018-06-25 发布文件大小:1KB

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时频分析代码，希望对大家有用，关于盲源分离的基础知识(Time frequency analysis code, we hope to be useful to everyone, about the basic knowledge of blind source separation.)

文件列表：

BBS\demo6_1.m, 374 , 2018-06-19
BBS\demo6_2.m, 402 , 2018-06-19
BBS\demo6_3.m, 725 , 2018-06-19
BBS\demo6_4.m, 258 , 2018-06-19
BBS, 0 , 2018-06-25

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youyulvboqi
理解有源滤波器的工作原理、性能特点。学习有源滤波器的设计方法。(Understand the working principle of active filter performance characteristics. Learning active filter design methods.)

2020-10-26 21:59:59下载

积分：1
xiaobofenxijiangyi
说明：小波(Wavelet)这一术语，顾名思义，“小波”就是小的波形。所谓“小”是指它具有衰减性；而称之为“波”则是指它的波动性，其振幅正负相间的震荡形式。与Fourier变换相比，小波变换是时间(空间)频率的局部化分析，它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。有人把小波变换称为“数学显微镜”。这套讲义生动详实的快速带领初学者掌握小波的基本要点，是不可多得的好材料！(This is a handbook about Wavelet.)

2009-09-02 15:44:17下载

积分：1
wavelet-transform
wavelet transform s code with details

2012-04-11 15:57:10下载

积分：1
ECG_FEATURE_WAVELET_ST
ECG feature wavelet transform

2012-03-17 21:30:47下载

积分：1
slantlet
图像多尺度分析，小波变换的进一步发展slantlet变换代码，用matlab编写有使用说明(slantlet code)

2020-12-14 15:09:14下载

积分：1
down-conversion
基于软件无线电的数字接收机中的下变频结构的程序(Based on software radio frequency conversion program under the digital receiver)

2012-05-14 19:58:33下载

积分：1
Matlab 梳状滤波器程序
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
DWT
基于小波变换的数字盲水印及对嵌入水印后图像的攻击检测(Attack detection based on wavelet transform digital blind watermark and the watermarked image)

2012-06-01 21:01:52下载

积分：1
lmd
对信号进行局部均值分解，得到一系列具有物理意义的pf分量(Local mean decomposition of the signal to obtain a series of having a physical meaning PF component)

2013-01-16 10:32:35下载

积分：1
3900001
本文研究的是利用奇异性指数实现对设备状态监视和故障预警功能。首先用LabVIEW 采集传感器电信号，然后对采集到的电信号进行小波变换得到信号包络奇异点的奇异性指数，即设备运行状态的特征值(In this research project, we use LabVIEW to do wavelet-transformation to the signal collected by sensors in order to get singularity index from the singular points of the particular signal’s envelope. Through comparing this eigenvalue to the figures in a standard database, we can know the functional status of the instruments. Not only the diagnoses are continuously displayed, but alarms about signs of dysfunction will also be raised in a proper way. In other words, both the supervision of the instrument and warning of dysfunction can be achieved)

2012-01-31 16:35:56下载

积分：1

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