Wired News (blog)
The US Army s Medusa (“Mob Excess Deterrent Using Silent Audio“) project had the same goal, but used a different slice of the electromagnetic spectrum, microwaves, to create sounds that seemed to be coming from inside the target s head.
http://www.wired.com/dangerroom/2012/02/darpa-magic/
http://www.mindcontrol-blog.com:8091/helma/twoday/mindcontrol/search?q=DARPA
http://www.mindcontrol-blog.com:8091/helma/twoday/mindcontrol/search?q=Medusa
http://www.mindcontrol-blog.com:8091/helma/twoday/mindcontrol/search?q=electromagnetic
http://www.mindcontrol-blog.com:8091/helma/twoday/mindcontrol/search?q=microwaves