Researchers from the Korea Advanced Institute of Science and Technology (KAIST) plan to demonstrate an anti-drone system that uses sound to disrupt drone flights.
If implemented, the system is able to target the Micro-Electro-Mechanical Systems (MEMS) gyroscopes, which are used by drones to stay level. Blasting sound towards the drone, however, is able to disrupt the gyroscope, so the drone will lose balance, and its tilt, orientation and rotation can be disrupted.
Of course, researchers tested several different gyroscopes and drones by attaching a wireless speaker to the aircraft. That would be impossible for a real-world anti-drone scenario, with KAIST researchers noting they don't have the tools in place to develop the "weapons in our lab."
There are potential uses for anti-drone systems, as militaries across the world are worried about stealth reconnaissance - and the potential drones could be used as flying IEDs.