In Search of the Missing Fundamental: by Richard K. Jones
Membrane Modes
The (2,2) Mode The eighth mode of a circular membrane is the (2,2) mode which has two nodal diameters and two nodal circles. This mode does not contribute to the sustained harmonicity or pitch of a timpano.
As timpanist, if clarity and immediacy of pitch is not the primary focus of your sound, then you might as well go back to the percussion section and play bass drum.