API¶

The API pages document MATLAB signatures and link to executable examples. For expected inputs and outputs, scientific interpretation, limitations, and references, use the Biosiglib method catalog.

Package¶

Function	Description
`version`	Return the installed Biosigmat implementation version.

ECG¶

Function	Description
`baselineremove`	Removes baseline wander from biosignals using cubic spline interpolation.
`pantompkins`	Algorithm for R-wave detection in ECG signals.
`sloperange`	Compute ECG-derived respiration (EDR) using slope range method.

HRV¶

Function	Description
`fdmetrics`	Compute standard frequency-domain indices for heart rate variability analysis.
`fillgaps`	Reconstruct missing events inside locally detected gaps.
`ipfm`	Estimate instantaneous heart rate using the integral pulse frequency modulation model.
`osp`	Decompose the HRV modulating signal into respiratory and unrelated components.
`removefp`	Remove false positive detections from HRV event series.
`tdmetrics`	Compute time-domain HRV metrics from interval series.

PPG¶

Function	Description
`hjorthArtifacts`	Detects artifacts in physiological signals using Hjorth parameters.
`pulsedelineation`	Performs pulse delineation in PPG signals using adaptive thresholding.
`pulsedetection`	Pulse detection in LPD-filtered PPG signals using configurable algorithms.
`pulseenvelopes`	Estimates lower and upper PPG envelopes using pulse-anchored interpolation.

Respiration¶

Function	Description
`tidalvolume`	Extracts upper and lower peak envelopes from a signal.

Tools¶

Function	Description
`expandnans`	Expands NaN segments by a time window.
`findsequences`	Find sequences of repeated (adjacent/consecutive) numeric values.
`hjorth`	Computes Hjorth parameters (activity, mobility, and complexity) from a signal.
`interpgap`	Interpolate small NaN gaps in a signal.
`ispeaky`	Determines if spectra are considered peaky based on peakedness thresholds.
`localmax`	Finds local maxima in matrix rows or columns.
`lpdfilter`	Low-pass derivative filter.
`medfiltThreshold`	Compute median-filtered adaptive threshold.
`nanfilter`	Implements filter function with support for NaN values.
`nanfiltfilt`	Implements filtfilt function with support for NaN values.
`nanpwelch`	Compute Welch periodogram when signal has NaN segments.
`peakedness`	Computes the peakedness of power spectral density estimates.
`slicesignal`	Divide signal into overlapping segments.
`slider`	Creates and adds a scroll slider to a figure with time-based plots.
`snaptopeak`	Refine QRS detections by snapping to local maxima.
`trimnans`	Trim NaN values from the beginning and end of a signal.