I imagine miqo'te hearing is akin to that of cats. They can hear much higher frequencies, and their hearing is much more sensitive than that of humans. However, as predators, the main use for their hearing is triangulation of prey.
So, if someone dropped a ball in a pitch black room, a miqo'te could possibly hear the sound of the ball hitting the ground and tell you in which direction the sound came from, and how far away it was, within a very small margin of error. Whereas a human would only hear a ball being dropped somewhere to the left, and depending on the loudness of the sound, determine if it was close or far away.
So, if someone dropped a ball in a pitch black room, a miqo'te could possibly hear the sound of the ball hitting the ground and tell you in which direction the sound came from, and how far away it was, within a very small margin of error. Whereas a human would only hear a ball being dropped somewhere to the left, and depending on the loudness of the sound, determine if it was close or far away.
