This is a two-hour audio-reactive loop in silver and grey, built to be left running on a second screen. What separates it from the enormous quantity of similar ambient content is the description, which states plainly that the patterns are drawn algorithmically from the audio and that neither the visuals nor the sound are AI-generated. The tone is a 98 Hz G2 with harmonics at 196, 392 and 588 Hz, synthesised by the same code that draws the figures and tuned so the loop closes cleanly.
That honesty is worth something. A large share of "cymatics" video on YouTube is simulation or stock footage presented as experiment, and the difference matters if you are trying to learn what a real plate does.
The channel name comes from the Eidophone, the 1880s instrument Margaret Watts Hughes used to make voice figures visible.