Kymat is the name Sven Meyer uses for his Hamburg-based cymatics laboratory and live shows. This 2016 video documents Sonic Water, an interactive installation made with Kim Pörksen and shown at an Olympus photography event in Berlin. A camera films a container of water that is vibrated by sound, and the water surface acts as a three-dimensional sculpture that turns the sound into moving images.
The set-up is close to what our own studio builds: vessel, driver, lighting, camera, projection. What Kymat does well is the lighting, which is what makes a water surface readable at all; without it you see nothing. The video does not give technical details, but the credits list the collaborators and the venue.
A second Kymat video from 2020 shows an interactive version at Milan Design Week driven by a hidden theremin, which is a good example of letting visitors make the sound themselves.