Patent ID: 8109361

Claim:
A solid-borne sound reducing structure installed on a surface of a structure which radiates noise while vibrating for reducing noise radiated from the surface of said structure to surroundings, comprising: a surface plate part which is disposed so as to at least partially cover the surface of said structure, and provided with a gas ventilating part which allows gas to pass through in a thickness direction, and an outer peripheral wall part which is disposed on the surface of said structure for supporting an outer peripheral edge of said surface plate part in such a manner that said surface plate part is integrally vibrated with the surface of said structure, and forming an internal gas chamber between the surface of said structure and said surface plate part, wherein said surface plate part, said outer peripheral wall part, and at least one partition wall part are configured such that a first-order resonance frequency of said surface plate part becomes higher than a frequency band of noise to be reduced.