https://physicsworld.com/a/analogue-computer-could-use-sound-to-make-rapid-calculations/ This article is sketchy on every detail imaginable, merely stating they are in the process of attempting to build one. Acoustic computing is not new, with people devising tiny tuning forks and large combs of tuning forks that can perform many of the same functions as an electronic circuit. Like I said, the article gives no details, but phonons are quantum particles composed of compression waves, or sound, and there's no reason an acoustic computer like this can't also be quantum mechanical. The huge advantage of any analog computer is they can treat time as merely a variable, producing answers to certain problems faster than is possible with a classical Von Neumann machine. How you program the damned thing, is anyone guess, but its related to AI research as well, because the human brain is also analog.
