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erasenoise

于 2012-05-31 发布文件大小:1KB

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对图像消除进行平滑，消除噪声影响，利于观察(Smooth, eliminating the image to eliminate noise, conducive to observe)

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MATLAB
MATLAB的入门的PPT,目的为了更好的学习MATLAB工具(MATLAB entry of the PPT, the purpose of study in order to better MATLAB instrument)

2009-03-14 14:47:25下载

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xiaobosuanfa
采样频率 fs=10000 轴承外环故障信号 fid=fopen( bearingout.dat , r ) 故障 N=1024 xdata=fread(fid,N, int16 ) fclose(fid) xdata=(xdata-mean(xdata))/std(xdata,1) 时域波形 figure(1) plot(1:N,xdata) xlabel( 时间 t/n ) ylabel( 电压 V/v ) db10小波进行4层分解一维小波分解 [c,l] = wavedec(xdata,4, db10 ) 重构第1～4层细节信号 d4 = wrcoef( d ,c,l, db10 ,4) d3 = wrcoef( d ,c,l, db10 ,3) d2 = wrcoef( d ,c,l, db10 ,2) d1 = wrcoef( d ,c,l, db10 ,1) ( Sampling frequency fs = 10000 bearing outer ring fault signal fid = fopen (' bearingout.dat' , ' r' ) failure N = 1024 xdata = fread (fid, N, ' int16' ) fclose (fid ) xdata = (xdata-mean (xdata))/std (xdata, 1) time-domain waveform figure (1) plot (1: N, xdata) xlabel (' Time t/n' ) ylabel ( ' voltage V/v' ) db10 wavelet decomposition 4 layer one-dimensional wavelet decomposition [c, l] = wavedec (xdata, 4, ' db10' ) 1 ~ 4 reconstructed detail signal d4 = wrcoef (' d' , c, l, ' db10' , 4) d3 = wrcoef (' d' , c, l, ' db10' , 3) d2 = wrcoef (' d' , c, l, ' db10' , 2) d1 = wrcoef (' d' , c, l, ' db10' , 1) )

2011-05-21 16:48:36下载

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Onduleur_tri_3niveaux
Abstract—This paper investigates the performance of a 4-switch

2012-01-05 09:09:39下载

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yuyinjipin
加入3点或5点中值平滑处理后再绘制上述基频曲线与未平滑曲线比较，观测完整一段话音的基频包络变化情况(Add to 3:00 or 5:00 in the value of the smoothing then draw the base frequency curve is not a smooth curve compared with the observed period of complete voice baseband envelope changes)

2014-02-21 13:17:20下载

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suijifangfabijin
用随机的方法逼近函数的matlab源程序(Approximation method with random function matlab source)

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2021-04-14 22:58:54下载

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TwoPointModulation_CP4FSK
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2007-10-16 14:44:34下载

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Ergodic Capacity of Doubly Selective Rayleigh Fading MIMO Channels

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2010-09-27 20:04:53下载

积分：1

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erasenoise

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