The cognitive algorithms can also highlight many events that would otherwise be considered irrelevant but are actually indications of threats or targets, such as a bird flying by or a branch's swaying.

ENGADGET: DARPA threat detection technology uses a camera to see targets, software and soldier brains to identify them

The technology can make it sound as if a bird is flying around your head in a full circle, not just passing from one side of a room to the other.

BBC: 3D audio may revolutionise travel