TYMPANI-TYPE MUSICAL INSTRUMENTS WITH FREQUENCIES CUTTER

摘要

Novelty: a musical tympani-type instrument with frequencies cutter is disclosed. Constitution: two pieces of sponge 2 found at the two internal exits and the periphery of the cylindrical body 1 which encloses said pieces. In the sequel, the animal membranes 3 adjoin the above two exits of the cylindrical body 1 and the two sponge or foamy pieces 2, simultaneously; upon stretching of the cord 4, the above animal membranes 3 adjoin the foam or the synthetic sponge 2 so that the production of frequencies gets reduced during percussion onto said membranes 3.