I have a closed how recipient with a cylinder form, something like this:
I have noticed that when I am dropping water through the hole, the collision of the water and the bottom of the recipient produces a sound. This sound changes depending on how full the recipient is, it has a low frequency when is very empty and a high frequency when is almost full. Is there a way to model this behavior? Could I know the level of the water inside the recipient by just hearing the sound produced?
I feel that it is needed to know the shape of the receivor (Volume, Diameter, Longitude), but let's suppose I have that information, and let's suppose that I am dropping pure water, I also feel that the trick is that the recipient must be closed to produce some kind of echo inside it, let's supposed it is closed
... How do I model the system?