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Just because someone works for government, doesn't mean that that they have a clue or not playing you.. You know the drill, someone saying something is not a technical or scientific reference..

Did you ask Ais, what did they say?

I've worked within the federal government and while there I met people who if they weren't on drugs maybe they should be.

There are patents on this type of a thing but they need a device

https://www.researchgate.net/figure/The-Audio-Spotlight-deve...

https://patents.google.com/patent/US7391872B2/en

https://www.hackster.io/news/new-speaker-tech-beams-private-...