Plotting ECG signals

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UCTI
UCTI on 5 May 2011
hi, can anyone teach me how to plot an ECG signals in time domain and transforming it into frequency domain in MATLAB? this ECG signals is corrupted by noise, therefore, a stable filter needs to be used. How to design this filter that can filter out the noise and plotting its magnitude response as well??
please help me, your help is much appreciated.
PS, where to find a corrupted ECG signals?? any links or help??

Accepted Answer

Paulo Silva
Paulo Silva on 5 May 2011
doc fft %the documentation example is very good
Very simple example how to add noise to a wave:
t=0:0.1:10; %from 0 to 10 seconds, sampling 0.1 seconds
y=sin(t); %measured amplitude
n=0.1*rand(1,numel(t)); %noise to add
plot(x,y+n)
  3 Comments
mitul Tailor
mitul Tailor on 27 Jun 2011
Hi Paulo,
I am having real time ecg data with inbuilt noise in it. how can i implement above filter in this? i am confused.
Paulo Silva
Paulo Silva on 27 Jun 2011
sorry but I have no idea how to deal with real time data, please search for that subject here on MATLAB Answers or the Newsgroup and if you still cannot find the correct answer you should post a new question

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