Abstract: Disclosed is a differential microphone unit which can improve the characteristics of a microphone unit and widen the directional range thereof. The disclosed differential microphone unit (100) is provided with: a microphone housing (20) which is provided with a pair of first sound holes (22a, 22b) on the same major surface (20a); a vibrating portion (11) which is disposed in the microphone housing and which vibrates according to differences in sound pressure transmitted via each of the pair of first sound holes; and sealing members (30, 130), which are disposed on the major surface of the microphone housing and which each contain a pair of second sound holes (31a, 31b, 131a, 131b) disposed so as to be in respective contact with the pair of first sound holes.

Abstract: A sound separating device includes a first microphone that converts input sound into a first sound signal, a second microphone that converts input sound into a second sound signal and has characteristics of a larger distance attenuation ratio than the first microphone, and a sound signal processing portion that optimizes a separating matrix by independent component analysis based on the first sound signal and the second sound signal that are supplied, and uses the optimized separating matrix so as to separate a third sound signal as a sound signal from a near field sound source and to separate a fourth sound signal as a sound signal from a far field sound source.

Abstract: Disclosed is a differential microphone unit which can improve the characteristics of a microphone unit and widen the directional range thereof. The disclosed differential microphone unit (100) is provided with: a microphone housing (20) which is provided with a pair of first sound holes (22a, 22b) on the same major surface (20a); a vibrating portion (11) which is disposed in the microphone housing and which vibrates according to differences in sound pressure transmitted via each of the pair of first sound holes; and sealing members (30, 130), which are disposed on the major surface of the microphone housing and which each contain a pair of second sound holes (31a, 31b, 131a, 131b) disposed so as to be in respective contact with the pair of first sound holes.