Infrasound New, mysterious high-tech weapon: infrasound equipment emits inaudible, powerful waves of energy to disrupt & destabilise through serious but non-lethal harm.  Victims experience vague, abnormal sensations of sound & pressure, causing headaches, loss of balance, sleep dysfunction.  Cybersecurity fact following fiction?  Sonic the hedgehog had to stop an evil genius from experimenting.  Break the…