f gravitational acceleration (<em>g</em>). Once the
data is collected, it is important to extract kinematically meaningful
information from it. In data processing, summary measures to describe a
signal are referred to as metrics or signal features.</p>
<p>If you have no knowledge about how an accelerometer works the typical
approach in metric calculation is to calculate all possible statistical
properties of the acceleration signal like the mean, standard deviation,
entropy, and skewness. However, as discus