Theory about what is happening during these slurred speech "Mind Control Weapon" incidents

So we are seeing a lot of these incidents recently involving news reporters or talk show hosts having sudden bouts of slurred speech and complete confusion. Now let's suppose that this isn't a medical reason and it is indeed a targeted individual for some new advanced weaponry; how could it work?

After seeing this compilation of these "mind control" episodes, it is startlingly close to how people react when they hear their own voice played back to them with a second delay. It has the effect of confusing the brain into not being able to process information correctly and often causes the slurred speech which is a running theme of these "Mind Control" videos.

Take for instance Speech Jammer. Here is someone trying to read Dr. Seuss while using Speech Jammer

I know there is not a lot to go on here, but considering they have the technology to direct sound to an individual (LRAD Sound Cannon - A type of Sonic Weapon) I think it could be highly possible to use Live television to record and send a presenter's own voice back to them if they wanted. Why they would do this i am not so sure, perhaps it is still in testing.