Identification of wall thickness and vibration of wood cavity and drum skin.

1, identification of wall thickness and * * * vibration of wood cavity. The thickness of African drum cavity of hardwood produced in West Africa is within 1.8cm-2.2cm, and the wall thickness is even. The drum cavity thickness of Africa Star Indonesia drum products is 2cm-2.5cm, and that of Africa Star Mali drum products is1.8cm-2cm..

2. Identification of drum skin. The thickness of the drum skin of the West African drum is between 0.5 mm and 0.8 mm (hairless). Because the raw leather (unstretched) is treated by hand, the thickness of the drum skin is uneven.