# HRVAnalysis
# Component Type: Processor (Subcategory: DSP and Feature Detection)
This component calculates various Heart Rate Variability (HRV) parameters from an incoming signal of raw ECG-data. For a detailed description of the HRV parameters and a guide how to use optical and electrical heart rate sensors see the work of Andreas Schreiber (in /documentation/DIYGuides/HRVAnalysis_Schreiber.pdf and /documentation/OpticalPulseSensor_Schreiber.pdf)
HRVAnalysis plugin
# Input Port Description
- HRVInput [double]: Input port for the raw signal
# Output Port description
- runtime [double]: the current time, since the first sample, in seconds
- pulserate [double]: the current calculated pulserate
- SDNN [double]: the standard deviation of all RR-intervals
- rMSSD [double]: the square-root of the average sum of the quadratic differences between neighboring RR-intervals
- SDSD [double]: the current standard deviation of successive differences between neighbouring RR-intervals
- pNN50 [double]: the numer of successive RR-intervales that differ by more than 50ms (expressed as percentage of all RR-intervals)
- pNN20 [double]: the numer of successive RR-intervales that differ by more than 20ms (expressed as percentage of all RR-intervals)
- DD [double]: the deviation of 2 succesive RR-intervals
# Event Listener Description
- start: An incoming event starts the HRV analysis
# Properties
- samplerate [double]: specifies the sample rate of the incoming signal.
- outlierRange [double]: Defines factor of the mean R-amplitudes which is used as a threshold to detect spikes / signal artefacts.
← Filter HRVRmssdFromRR →