Audio as a weapon


I would like to deviate a bit from the normal audio equipment conversation and delve into the phenomenon of the recent audio "weapon" that appears to have been deployed in Cuba upon State Department employees and now, it appears, in China. I know that very low frequency can be dreadful to listen to but anyone out there have any ideas with regard to how audio could be used as a weapon? It is not my intention to draw speculation of a political nature, I am only interested in the technical aspect of audio as a "weapon". Anyone have any thoughts?
128x128falconquest
You might have a point. All photons and actually all atomic particles and all non atomic objects, even bowling balls, behave like particles and waves, e.g., Double Slit Experiment. Whether that’s the same thing as saying particles exist in vibrating particle fields, or whether that’s the same as saying mass is really energy I’ll leave that to the student.
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All you need is a cannon to fire the bowling balls and slits big enough for them to pass through. It’s not rocket science. 🚀 it’s really more of a thought experiment. Yeah, I know, ouch, right? Besides, you actually don’t even have to do the experiment at all. All you have to do is understand the original Double Slit experiment, what it means and it’s implications.
I sometimes use audio as weapon myself.  I find that when my wife invades my man cave and starts to ramble on about something completely uninteresting and unimportant, I return fire by gradually goosing the volume on my remote until she gives up and goes back upstairs.  It works every time.
Producing the frequency that a glass resonates with... given enough volume... will cause the glass to shatter. 

Guess what.  Human flesh also has a resonance point. Its a lower frequency too.