Table A1.

Advantages and drawbacks of the previously introduced solutions for triggering.

	Audio	${\mathit{\omega }}_{\mathit{energy}}+\mathit{j}$	${\mathit{\omega }}_{\mathit{y}}+\mathit{j}$
Advantage	-	high sensitivity, most of the shots are detected as the swing in all axes is captured	high selectivity, false shots are very rare, for example grabbing a ball from the ground by hitting the racket on it
Drawback	impact not distinguishable from wind	lacks in selectivity, too many false positives	some shots are not detected due to slow angular velocities in the y-direction