Patent ID: 8983079
Filing Date: 2015-03-17
Classification: H04R

Abstract:
1. A stereo microphone comprising: four condenser microphone units having directional axes, the directional axes being disposed in a single horizontal plane, the four condenser microphone units each having unidirectivity, the four condenser microphone units each having a quadrangular shape viewed from a direction of each directional axis, the four condenser microphone units being disposed such that adjacent condenser microphone units have directional axes directed in different directions by 90° to each other, wherein the four condenser microphone units are configured as a pair of bidirectional microphone units, each bidirectional microphone unit including two of the four condenser microphone units which have directional axes directed at 180° to each other and which collaborate with each other, wherein the four condenser microphone units are disposed such that peripheral portions thereof are in contact with each other, and wherein one of the bidirectional microphone units is for a right channel, and another of the bidirectional microphone units is for a left channel.