How to filter the noise out from the ECG signal
51 views (last 30 days)
The original ECG signal looks like this, the sampling frequency is 360Hz.
I try to design a FIR filter to filter the noise out so that i can get a clear view of PQRST complex of the heart beat. I plot this signal in the frequency domain and it looks like this:
So, how should I fiind the frequency where the noise locates?