DIY Acoustic Camera
I'm not the original author, however, ages ago I invented what's now being called "acoustic camera".  (Specifically, the SOTA on the math side for precision, accuracy.)<p>The resolution is fine enough that with COTS parts, I can record my signature simply by sketching it out with my fingernail on a table.<p>Every few years I dust this off and play with it, wondering if there's some application or other way to "turn this into money" (an increasing concern in the coming months...<tiny>PLZ HIRE ME</>), but I'm not a "product guy".<p>I'll answer some questions about the technology, but would really love to know if anyone here has advice on somehow using this achievement to pay rent.  :)