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Correct Baseline Wander in ECG Signals

Source: R/ecg-quality.R
ecgBaselineCorrect.Rd

Removes low-frequency baseline drift from ECG data using either a high-pass moving-average subtraction or a running-median subtraction.

Usage

ecgBaselineCorrect(
  x,
  method = c("highpass", "median"),
  cutoff = 0.5,
  assay_name = NULL,
  output_assay = "baseline_corrected"
)

Arguments

x

A PhysioExperiment object with ECG data.

method

Correction method: "highpass" (default) subtracts a moving average; "median" subtracts a running median.

cutoff

Approximate cutoff frequency in Hz (default: 0.5). Controls the window size of the moving average or median filter.

assay_name

Name of the input assay. If NULL the default assay is used.

output_assay

Name of the assay in which to store the corrected signal (default: "baseline_corrected").

Value

A PhysioExperiment with the corrected signal stored in output_assay.

References

Clifford, G.D., Azuaje, F. & McSharry, P.E. (2006). Advanced Methods and Tools for ECG Data Analysis. Artech House.

See also

ecgSignalQuality for signal quality assessment, ecgDetectRpeaks for R-peak detection, ecgQualityCheck for ectopic beat detection.