How to distinguish African drums?

There are too many words upstairs, so I can sum them up as follows: \x0d\ 1. The drum cavity must be integrated, not spliced. The ductility of drum rope is low, and the quality is good (very important) \x0d\3. The number of rope buckles should be enough \x0d\4. Drum skin should be made of raw sheepskin (not white synthetic)