What gives?

[Jonathan Meer]

Your character is attuned to the subtle vibrations of sound waves. Through concentration, he/she can manipulate those waves in various ways, including magnifying them, deadening or cancelling them, and diverting them from one place to another. The expert Sound Manipulator is a master of psychological tricks in combat, while the out-of-combat applications are legion. The Sound Manipulator cannot manipulate sound as effectively as someone with the Wind Ki ability.

Same principle as Psychokinesis/Telekinesis.