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Downsample EDA Signal

Source: R/eda-preprocess.R
edaDownsample.Rd

Reduces the sampling rate of an EDA signal by first applying an anti-aliasing lowpass filter at half the target sampling rate, then decimating the signal.

Usage

edaDownsample(x, target_sr, assay_name = NULL)

Arguments

x

A PhysioExperiment object containing EDA data.

target_sr

Target sampling rate in Hz. Must be lower than the current sampling rate.

assay_name

Name of the input assay. If NULL, uses defaultAssay(x).

Value

A new PhysioExperiment with the downsampled signal in the "raw" assay and the sampling rate set to the actual achieved rate. Events are preserved. Downsampling parameters are stored in metadata(x)$eda_downsample (a list with original_sr, target_sr, factor, original_n_time, and new_n_time).

References

Boucsein, W. (2012). Electrodermal Activity. 2nd ed. Springer. doi:10.1007/978-1-4614-1126-0

See also

edaFilter for frequency-domain filtering, edaArtifact for artifact detection and correction