| 主权项 |
1. A silencer for a wind instrument, comprising a hollow pipe whose one end in a direction along an axis of the pipe is a large-diameter end and serves as a closed end,
the pipe comprising an outer wall on which a plurality of recessed portions or at least one protruding portion are formed in a vicinity of the closed end, the outer wall comprising a conical side wall which defines a side end of an inner space of the pipe, and a bottom wall which closes one end of the side wall such that the bottom wall defines a bottom end of the inner space of the pipe, wherein the plurality of recessed portions are formed on the outer wall and arranged around the axis of the pipe, wherein each of the plurality of recessed portions extends continuously from an outer surface of the bottom wall to an outer surface of the side wall, and wherein the plurality of recessed portions are formed on an outer edge of the bottom wall by a connection of the large-diameter end of the pipe to the outer surface of the bottom wall while keeping a shape of the plurality of recessed portions formed on the outer wall of the pipe. |
