![Signal Acquisition [OpenSignals]](https://plux.info/1132-large_default/event-detection-r-peaks-ecg.jpg "Signal Acquisition [OpenSignals]")
![Signal Acquisition [OpenSignals]](https://plux.info/1132-thickbox_default/event-detection-r-peaks-ecg.jpg "Signal Acquisition [OpenSignals]")
NB-PP-09
Heart rate variability analysis is dependent of the detection of ECG R peaks, which is the main topic of the present Jupyter Notebook .
Event Detection - R Peaks (ECG)
Heart rate variability analysis is dependent of the detection of ECG R peaks, which is the main topic of the present Jupyter Notebook .
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![Signal Acquisition [OpenSignals]](https://plux.info/1125-home_default/fatigue-evaluation-evolution-of-median-power-frequency.jpg "Signal Acquisition [OpenSignals]")
Raw data contained in the generated .txt, .h5 and .edf files consists in samples and each sample value is in a raw value with 8 or 16 bits that needs to be converted to a physical unit by the respective transfer function.
![Signal Acquisition [OpenSignals]](https://plux.info/1133-home_default/fnirs-sensor-unit-conversion.jpg "Signal Acquisition [OpenSignals]")
The current Jupyter Notebook is dedicated to the unit conversion procedure of signals acquired with fNIRs sensor.
![Signal Acquisition [OpenSignals]](https://plux.info/1131-home_default/event-detection-muscular-activations-emg.jpg "Signal Acquisition [OpenSignals]")
In this Jupyter Notebook it will be presented a single threshold algorithm, that includes the Teager-Kaiser Energy Operator (TKEO) in his implementation.
In spite of the unit conversion procedure has some common steps applicable to all sensors, the current Jupyter Notebook is dedicated to the unit conversion procedure of signals acquired with ECG sensor.