ECG-Filter-Design

In these Codes, my main task was to design efficient digital filters to eliminate all the noise sources associated with the ECG signal so as to get a noise free ECG signal as output from the filters.

ECG inevitably affected by various types of noise interference such as:

1. Baseline Wander noise
2. Power Line Interference (50/60 Hz)

A 4th order Elliptic filter and a 4th order Chebyshev Type II configurations are found to be better choice for the implementation of high pass and Notch filters respectively.

How to Filter noisy ECG:

1. Add path your corresponding directory

2. Add following files to this path:

   • Chebyshev_II.m
   • Elliptic.m
   • Test.m

3. Add your noisy ecg signal to this directory. Note that your signal must be in .mat format.

4. Open Test.m file

5. Enter the name of your signal in the Load Signal section.

6. Use Notch function to filter 50 Hz powerline noise.

7. Use HPF function to filter baseline noise.

8. Run the code

9. Then you can see the result of filtering in the opened figures like fiugres shown below:

I hope this codes was useful for you. Any feedback to this filters design is warmly welcomed.