Removing baseline drift of ecg signal

[eo489]

I am making a program with ecg signals with noise.  Every time I filter the signal using the lowpass butterworth filter, there is still a baseline drift at the beginning.  Any suugestions on how to get rid of it?

[Bob_Schor]

Attach your VI (not a picture of it) and a sample signal for us to inspect.  If your signal has a "drift", then you may have a problem with your amplifier or electrodes (it's often best to remove sources of "noise" or "drift" before they enter the recording equipment).  If you really have a linear drift, then you could always measure it and subtract out the drift ...

Bob Schor

[WuDavid]

Unlike glitch noise, baseline drift should be a low-frequency component and should be eliminated by high-pass filter.