MICROPHONE UNIT, VOICE INPUT DEVICE OF CLOSE-TALKING TYPE, INFORMATION PROCESSING SYSTEM, AND METHOD FOR MANUFACTURING MICROPHONE UNIT

摘要

A microphone unit (1) comprises a casing (10) with an internal space (100); a partition member (20) which is provided in the casing to divide the internal space into a first space (102) and a second space (104) and is at least partially constituted of a diaphragm (30); and an electric signal output circuit (40) which outputs an electric signal on the basis of the vibration of the diaphragm. In the casing (10), there formed are first through hole (12) communicating the first space (102) with the outside space of the casing and a second through hole (14) communicating the second space (104) with the outside space of the casing. Thus, the high-quality microphone unit which is small in outline and allows deep removal of noise can be provided.