Ultrasonic cleaning devices exist, but they only seem to be able to clean small objects such as jewellery and model parts. MP3 players also exist, but they only seem to be able to play sound well below ultrasonic pitch. They also tend to be fairly quiet. But audio sampling has been around a long time and is usually well into the ultrasonic range, although it doesn't often seem to have been used for ultrasound. I presume it has been done but I haven't Googled.
It seems to me that there should be a device which can do all three. It's a general media player rather than just playing MP3s. Unlike other audio players, its volume can be turned up to deafening levels, though not while the earbuds are attached. It has preloaded ultrasonic audio files at around 40 kHz and a washing up bowl with a jack plug. When you wish to do the washing up, you plug the washing up bowl into the media player, fill it with water and washing up liquid, turn it on and it vibrates the gunk off your dishes before draining. If you're pregnant or have something interesting going on inside your body, take the media player, cover it in gloop and press it against the appropriate part of your anatomy, and it will scan the interior of your body ultrasonically and produce an image on its screen.
Finally, you can boost the bass and use it for something else.-- nineteenthly, Oct 14 2019 Yes, now that you've described it, it's really quite surprising that nobody's done it before.-- MaxwellBuchanan, Oct 14 2019 Not the dishwasher bit maybe, but I do think a combined ultrasound scanner/media player is fairly obvious and simple.-- nineteenthly, Oct 14 2019 You do realize you could easily kill someone with one of these things ?
[+], jolly good, carry on. We are happy to quote for components, sub-assemblies, or final products (unpackaged) as long as the quantities are reasonable and you do all the liability stuff.-- 8th of 7, Oct 14 2019 <looks through album covers, and raises eyebrow in surprise> "Cradle of Filth? I didn't have you down as a fan?" "Yes, it's fantastic for doing the dishes."-- zen_tom, Oct 14 2019 //I do think a combined ultrasound scanner/media player is fairly obvious and simple//
Yes, you could combine the multiple reflectometric pickups, phase compensators, image deconvoluters, Doppler compensators, contrast enhancement, range-nulling, interferometry module, resolution selector module, image processor, image buffering, background subtraction, feedback quenching circuit and depth-of-field corrector of an ultrasound machine with a simple MP3 player and Bob's your fetus.-- MaxwellBuchanan, Oct 14 2019 //Yes, you could combine the multiple reflectometric pickups, phase compensators, image deconvoluters, Doppler compensators, contrast enhancement, range-nulling, interferometry module, resolution selector module, image processor, image buffering, background subtraction, feedback quenching circuit and depth-of-field corrector of an ultrasound machine with a simple MP3 player and Bob's your fetus.//
Can't most of that be done with software? You'd want something a little more computationally robust than the average MP3 player, but it could probably be done by a modern smartphone.-- discontinuuity, Oct 14 2019 Instead of covering the back of a smartphone with cameras (which is where things seem to be heading...), put an array of microphones (or whatever the ultrasonic equivalent is). Should be able to get enough mic's of enough different types to provide redundancy, interferometry, etc. (Probably need a couple of emitters too; perhaps one in each corner.) All the rest: there's an app for that...-- neutrinos_shadow, Oct 14 2019 We find your sunny optimism amusing, naïve, and a bit sad ...
// whatever the ultrasonic equivalent is//
"transducer"-- 8th of 7, Oct 14 2019 //amusing// Well, I am funny-looking... //naïve// Frequently //a bit sad// Yeah, that too... "transducer" - THAT'S the one I wanted.-- neutrinos_shadow, Oct 14 2019 [+] make a cellphone useful.-- FlyingToaster, Oct 15 2019 Could be combined with the bat ears thingy-- pocmloc, Oct 16 2019 random, halfbakery