Footage shows thousands of rally-goers filling ... nausea and disorientation – all signs of the weapon. Experts say that sonic cannons can emit up to 160 decibels, roughly equivalent to standing ...

But I will say this for the Sonic the Hedgehog footage that premiered at CinemaCon -- this movie has a great cast. SEE ALSO: Reasons why Sonic the Hedgehog 2 gameplay is timeless — Games to Play ...

FOOTAGE has emerged showing what appears to be a military-grade sonic cannon being used to disperse peaceful protesters in Serbia. It is claimed riot police deployed the mysterious weapon to ...