I think light is easier to study because we can see it. It would be easier to study sound if we could be able to hit a glass and see how the energy waves propagate in the material and compress the air. Then we could see amplitude, length, dispersion, duration, decay, etc. Does any of you have some googles to watch this?

EDIT: I found a great source of math for sound:


http://hyperphysics.phy-astr.gsu.edu/hbase/hframe.html

That map reminds me a lot the technology tree of Civilization