That doesn’t ring a bell Kuru. I tried to Google it but came up empty, other than remembering from some other referenced articles how much I enjoyed his writings.
Ah well. I am using Duck Duck Go and don't always find what I am looking for. Choice of words is crucial and sometimes you'll get thousands of hits. I never go farther than the second page without trying different words.
I have memories of reading Dad's Popular Science, Popular Mechanicx and Mechanix Illustrated magazines when I was a kid and two articles might have been interesting in the topic.
One, an article about a speaker the Army was messing with that used a flame somehow as the transducer. Supposedly it sounded good but really only useful as a tweeter.
On the opposite side of the spectrum - and this would have been late 60's or so - the US Military was looking into using sub-sonic sound as a weapon. Supposedly at 6 cps if you can get the volume up high enough, it kills everything. Good thing nobody told Spinal Tap!!!!!
I guess neither of those ideas ever made it past the test bench. My searches brought up all sorts of stuff but nothing like I was looking for. So it goes...