Patent ID: 8315397

Claim:
A microphone device comprising: a pair of directional microphones with high directivity in a sound collecting direction, a pair of nondirectional microphones with low directivity in the sound collecting direction, and a casing accommodating the pair of directional microphones and the pair of nondirectional microphones, wherein the pair of nondirectional microphones is arranged so that sound collecting directions thereof are outward from both side surface walls of the casing, while the pair of directional microphones is arranged so that sound collecting directions thereof are outward from a front surface wall of the casing and intersect each other in vicinity of the front surface wall, and all or a part of the pair of directional microphones is accommodated in a space sandwiched by the pair of nondirectional microphones; wherein each of the pair of directional microphones includes a first sound collecting surface and a second sound collecting surface facing opposite to each other, and the first sound collecting surface faces a first sound collecting hole provided to the front surface wall of the casing, while the second sound collecting surface faces a second sound collecting hole provided to a rear surface wall of the casing.