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I have downloaded a file of .mat type and imported it in matlab, now I want to add noise in that eeg signal.

>fs = 512
>T = 1/fs; % sampling rate or frequency;
>N =length(EEGsig);
>ls = size(EEGsig); % find the length of the data per second
>tx =[0:length(EEGsig)-1]/fs;
>fx = fs*(0:N/2-1)/N;
>figure; subplot (211), plot(tx,EEGsig); xlabel('Time (s)'), 
>ylabel('Amplitude (uV)'), title('Original EEG signal');  %EEG waveform
>subplot(212), plot(tx,EEGsig);
>xlabel('Time (s)'), ylabel('Amplitude (uV)'), title('Zoom into original EEG 
signal at 1 to 2 seconds'), xlim([1,2]) ; % Used to zoom in on single ECG 
waveformfigure

<biomedical signal processing>
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Aparna Gupta
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  • dear @rayryeng sir, i need to continue the code i have already mentioned above.and as i have just started using matlab,hence i really dont know to code with it – Aparna Gupta Jun 21 '17 at 20:13
  • Have you read the duplicated question and it answers? If you think it doesn't solve your problem, please edit your post and clearly indicate the difference with the mentioned post. – m7913d Jun 21 '17 at 20:45
  • @m7913d,sir m sorry for the misconvenience that yu had.as i am a beginner in matlab hence i'm unable to track out the errors or correct them.Thus,i had asked for help. – Aparna Gupta Jun 22 '17 at 10:55

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