Estimate respiration rate from PPG — estimate_gazepoint_respiration_from

Estimates an exploratory respiration rate from low-frequency modulation in a PPG/BVP signal. This is a lightweight screening helper and should not be interpreted as a replacement for a respiratory sensor.

Usage

estimate_gazepoint_respiration_from_ppg(
  data,
  ppg_col = NULL,
  time_col = NULL,
  sampling_rate_hz = NULL,
  respiratory_band_hz = c(0.1, 0.5),
  detrend = TRUE
)

Arguments

data: Data frame or numeric PPG vector.
ppg_col: PPG/BVP signal column for data-frame input.
time_col: Optional time column.
sampling_rate_hz: Sampling rate for vector input or when no time column is available.
respiratory_band_hz: Two-element frequency band used to search for the respiration peak.
detrend: If TRUE, remove a linear trend before spectral estimation.

Value

List with summary, spectrum, and settings.