Tuesday, April 25, 2017
I tried, but I just cannot match the spectrum of the real drum:
with the theoretical spectrum of the circular membrane:
I have to conclude that the either or both of the facts that (i) a drumhead is not a "membrane" (rather a combination of a membrane and a disk which resists being bent) and (ii) the membrane is interacting with a half-closed column of air, result in a spectrum that is quite different that the theoretical one for a stretched membrane alone. :-(