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visiblewmk
说明: 在图像中加入可视水印,用matlab仿真,实验证明保持了较好的图像质量(in adding visual image watermarking using Matlab simulation experiment to prove that maintaining a good image quality)
- 2006-05-16 18:04:40下载
- 积分:1
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converter
单相整流器的电流电压双闭环控制仿真图,通过对电流环电压环进行解耦实现(Single-phase rectifier current and voltage double-loop control simulation diagram, by decoupling the current loop voltage loop)
- 2013-04-22 16:17:11下载
- 积分:1
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fangbo
方波的产生,以及仿真,并作频谱(fft),入门学者(Produce a square wave, as well as simulation, and make the spectrum (fft), entry scholars)
- 2014-03-26 13:39:55下载
- 积分:1
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code
SPEECH ENCODING USING ADPCM
- 2009-03-14 03:23:36下载
- 积分:1
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Wiener-filter
matlab的维纳滤波器源码,内容较少,但滤波器的功能都有!(the source code of Wiener filter)
- 2011-06-11 10:39:00下载
- 积分:1
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matlab_GUI_5
Matlab GUI5 初学者视频教学,非常实用的视频教学文件(Matlab GUI5 learner video teaching,very useful)
- 2011-09-07 14:45:12下载
- 积分:1
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Untitled
主成分自相关系数可以进行两组对变量的偏最小二乘回归分析(Partial least squares regression analysis can be two groups of variables)
- 2012-09-08 19:07:58下载
- 积分:1
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dst_idst
DCT and DST funnctions in MATLAB for arbitrary dimensions
- 2015-01-06 12:45:42下载
- 积分:1
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chengxu
小波变换进行变速箱故障诊断
首先将s1和s2信号时域谱(s1代表维修前的振动信号,s2代表维修后的振动信号),画出来进行对比,会发现s1信号的振动幅值会比较高;然后对s1和s2分别进行小波分解并画出各层的时域谱,只对比s1和s2分后的最高时域谱,s2更加的具有周期性,且幅值较小,s2周期性不够明显,且振动过于密集。分析完时域谱后开始分析频谱,首先对原信号s1和s2fft转换,得到频谱图,如图,然后再对小波分析后高频部分进行fft转换,做出频谱图。对比后我们发现,在f 2375HZ出(也就是齿轮的啮合频率),s1信号频谱幅值会有急剧的升高,然后,其谐波的幅值也会增大。所以可以推断出该维修前的增速箱的齿轮可能出现问题。(Gearbox fault diagnosis based on wavelet transform s1 and s2 first time domain signal spectrum (s1 behalf of the vibration signal before maintenance, vibration signal s2 representative of repaired), drawn comparison, you will find a signal s1 vibration amplitude will be higher then s1 and s2 respectively wavelet decomposition and draw the layers of time-domain spectrum to only a maximum time domain spectroscopy s1 and s2 points after, s2 is more cyclical and smaller magnitude, s2 cyclical enough obviously, and the vibration is too dense. End domain spectral analysis after the beginning of the spectrum analysis, the first of the original signal s1 and s2fft conversion to give the spectrum, as shown, and then after the high frequency part of wavelet analysis fft transformation to make spectrum. We found that after the comparison, at f 2375HZ out (i.e. the gear mesh frequency), there will be a sharp increase in the amplitude spectrum of the signal s1, and then, the amplitude of the ha)
- 2017-01-17 19:18:02下载
- 积分:1
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Dr.MatlabTutorialSlides
This is the full commands for the matlab
- 2009-12-11 11:04:42下载
- 积分:1