Patent ID: 8045741
Filing Date: 2011-10-25
Classification: H04R

Abstract:
1. A boundary microphone, comprising: a base made of a metal; a cover made of a metal having a plurality of holes for introducing sound waves; and internal components including a microphone unit that is disposed in an internal space enclosed by the base and the cover, the base and the cover being electrically connected to each other, the boundary microphone further comprising: a first metallic part disposed on one side of the upper and lower sides of the internal components; and a second metallic part which is disposed on other side of the upper and lower sides of the internal components and which encloses the internal components along with the first metallic part from all directions, wherein the base, the cover, the first metallic part, and the second metallic part are alternately overlapped at their peripheral portions, and wherein at least one of the first metallic part and the second metallic part is made of a metallic mesh in order to introduce sound waves to the microphone unit.