Microphone unit and sound input device equipped with it

摘要

A microphone unit (1) converts voice into an electric signal based on the vibration of a diaphragm contained in an MEMS chip (14). The microphone unit (1) includes a substrate (12) on which the diaphragm is mounted (the MEMS chip (14) is mounted); a cover member (13), having sound holes (132, 133), that is disposed above the substrate (12) so that the diaphragm is contained within the inner space formed between the cover member (13) and the substrate (12); and a holding member (11) that holds only the substrate (12) or both of the substrate (12) and the cover member (13).