![Signal Acquisition [OpenSignals]](https://plux.info/1123-large_default/digital-filtering-pre-process-step.jpg "Signal Acquisition [OpenSignals]")
![Signal Acquisition [OpenSignals]](https://plux.info/1123-thickbox_default/digital-filtering-pre-process-step.jpg "Signal Acquisition [OpenSignals]")
NB-PP-01
In this Jupyter Notebook it will be demonstrated how to digital filter the signal.
Digital Filtering - A Fundamental Pre-Processing Step
In this Jupyter Notebook it will be demonstrated how to digital filter the signal.
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![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.
The current Jupyter Notebook is dedicated to the unit conversion procedure of signals acquired with ECG sensor.
![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/1132-home_default/event-detection-r-peaks-ecg.jpg "Signal Acquisition [OpenSignals]")
Heart rate variability analysis is dependent of the detection of ECG R peaks, which is the main topic of the present Jupyter Notebook .