This experiment is based on a question at the Lab Exam (EN1093).

According to the following difference equation which relates output (y[n]) and input (x[n]) we were asked to derive the transfer function H(z). This filter removes the 50Hz noise component.

download the ECG Signal distorted with noise

Pole-zero Plot

MATLAB code to implement the Notch Filter with the above characteristics

Implementation output ->

For Further reading: