Help for baseline drift removal/correction

1. How do I get rid of baseline drift?
2. How do you reduce baseline wander on ECG?
3. What causes baseline drift ECG?
4. What causes baseline drift HPLC?

How do I get rid of baseline drift?

Baseline wander is a low-frequency noise of around 0.5 to 0.6 Hz. 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 reduce baseline wander on ECG?

BW removal is an important step in processing of ECG signals because BW makes interpretation of ECG recordings difficult. The main cause of the BW in the ECG signal is movement and respiration of the patient [2]. One of the approaches to remove BW artefacts is the high-pass filtering of ECG signals [2].

What causes baseline drift ECG?

Baseline wander is a commonly seen noise in ECG recordings and can be caused by respiration, changes in electrode impedance, and motion.

What causes baseline drift HPLC?

The primary cause of baseline drift in gradient HPLC is due to changes in the refractive index of the eluent. During gradient elution the composition of the eluent will change and, hence, so will its refractive index. This usually manifests itself as a gradual increase in response during the gradient time.