The Ears of the Chiroptix was a Nightsister incantation, detailed on the Nightsisters page, that enhanced the user's auditory perception. This spell enabled the caster to perceive faint sounds and essentially visualize through sound, constructing mental images of obscured locations based on the sounds they produced.
This specific method was permitted during the Nightsisters' Test of Night ritual. The name of the spell is derived from the chiroptix, a species native to Dathomir renowned for its exceptional hearing abilities.
The technique known as Ears of the Chiroptix bears resemblance to animal echolocation, which is the biological sonar system used by creatures like bats and other animals to locate objects through the interpretation of echoes.