I built an acoustic LEVITATOR! Making liquid float on air

So, I am just learning about standing waves and sound in my physics class. From my understanding, sound waves are actually longitudinal waves that travel through a medium. The description of standing waves uses transverse waves to explain it, but the idea is still the same. Correct me if I'm wrong please, but the nodes in which the material sits in are considered displacement nodes, where the particles of the medium do not move. This is related to pressure, as a place with displacement equals zero is effected by a max or min amount of pressure change. At displacement nodes, it is said to also be a pressure antinode, where delta P is max or min. To explain this concept, imagine the reason why displacement at this point is zero; you either have P_max, where all the particles around it are squeezing the node at both sides; or you have P_min, where the particles around it are being drawn away. You can see this idea at work at 5:05, where the maximum change in pressure causes the particle to be "squeezed" back into the displacement node. Let me know if I got it wrong!