Patent ID: 8605930

Claim:
A microphone unit comprising: a case having an internal space; a partition member provided in the case and at least partially composed of a vibrating membrane, wherein the partition member splits the internal space into a first space and a second space; and an electrical signal output circuit that outputs an electrical signal on the basis of vibration of the vibrating membrane, wherein a first through hole through which the first space and an external space of the case are communicated with each other, and a second through hole through which the second space and the external space of the case are communicated with each other are formed in the case, wherein a center-to-center distance between the first and second through holes is set to a distance within a range in which sound pressure in a case where the vibrating membrane is used as a differential microphone does not exceed sound pressure in a case where the vibrating membrane is used as a single microphone with respect to a sound in a frequency band less than or equal to 10 kHz.