Removing periodic spike noise from ECG signal

1. How do you remove noise from an ECG?
2. How do you remove interference from an ECG signal?
3. How do you remove spikes from a signal?
4. How to remove noise from ECG signal in Matlab?

How do you remove noise from an ECG?

To remove it, a high-pass filter of cut-off frequency 0.5 to 0.6 Hz can be used. Powerline interference (50 or 60 Hz noise from mains supply) can be removed by using a notch filter of 50 or 60 Hz cut-off frequency.

How do you remove interference from an ECG signal?

The power line interference (50Hz) from ECG signal can be removed by adaptive filtering while it's harmonics and high frequency noise can be removed by implementing general notch rejection filters.

How do you remove spikes from a signal?

Sometimes data exhibit unwanted transients, or spikes. Median filtering is a natural way to eliminate them. Consider the open-loop voltage across the input of an analog instrument in the presence of 60 Hz power-line noise.

How to remove noise from ECG signal in Matlab?

The sgolayfilt function smoothes the ECG signal using a Savitzky-Golay (polynomial) smoothing filter. x = ecg(500). '; y = sgolayfilt(x,0,5); [M,N] = size(y); Initialize the time scope to view the noisy signal and the filtered signal.