US Navy developing long-range microphone to disorient people with their own voice

The US Navy is at work on a very different kind of weapons system: one that relies on the human voice.

In June, the Navy filed a design for an acoustic hailing and disruption system (AHAD), a device that records a target’s speech with a long-range microphone, then plays back two versions of the audio: one simultaneously, and the other with a slight delay.