Aver Information Inc.

Ming-Yu Liu

A microphone device includes a first circuit board, a plurality of first microphones and a plurality of second microphones. The first microphones are disposed on the first circuit board and arranged along a first spiral about the reference point. The second microphones are disposed on the first circuit board and arranged along a second spiral about the reference point, wherein the second spiral is non-overlapped with the first spiral. The first microphones and the second microphones are point-symmetrical with respect to the reference point, the first microphones and the second microphones form a plurality of microphone sets, and each of the microphone sets comprises one of the first microphones and one of the second microphones which are point-symmetrical with respect to the reference point.

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Taipei, Taiwan

Ming-Yu Liu