Although I don't know about sound to this depth, I think this simulation can appeal to specialists. It is not something for the common public, IMO, but seems like a promising toy for sound professionals.
I think it could be improved with a small tutorial. In this sense, being able to see the wave real time was the greatest help I found.
The interface is clear and simple, nothing to object. As I say, I think this is for professionals. No pun intended, I just didn't know how to play because I lack of theoretical basis to handle it.