I believe 100% that this is how the sounds are being created.
But the questions of how the world is hearing them, why we're hearing them, and who is causing them to be heard are still there. This video alleges how we are hearing them and who is causing them to be heard, and implies a few reasons why. Supposedly her NASA informant disclosed the who, what, how and why, but she didn't do a very good job at explaining the why in my opinion.
So are they doing audio tests for Project Blue Beam where they will add the video when it's showtime? Is it going to be part of bringing in the NWO? Is it going to be part of the alien threat/deception? I asked her, so many we'll get an answer.