following code is used for filter? if yes, what is the type of filter can u help me ? wavedec and appcoef use for filter?

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serhat dag 2016-12-25

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https://ww2.mathworks.cn/matlabcentral/answers/318163-following-code-is-used-for-filter-if-yes-what-is-the-type-of-filter-can-u-help-me-wavedec-and-a

关闭： MATLAB Answer Bot 2021-8-20

if flag==2 flag=3; [c,l]=wavedec(nfile,8,'db8'); ca1=appcoef(c,l,'db8',1); ca2=appcoef(c,l,'db8',2); ca3=appcoef(c,l,'db8',3); ca4=appcoef(c,l,'db8',4); figure(2),plot(ca1,'-k'),title('Cofficients of Signal At l Level Decomposition') figure(3),plot(ca2,'-k'),title('Cofficients of Signal At 2 Level Decomposition') figure(4),plot(ca3,'-k'),title('Cofficients of Signal At 3 Level Decomposition') figure(5),plot(ca4,'-r'),title('Cofficients of Signal At 4 Level Decomposition') flag=3 ; else errordlg('First select ECG Signal') end