| 摘要 |
A two-way communication apparatus used for two-way speech and improved from the viewpoint of the performance, the viewpoint of the price, the viewpoint of the dimensions, and the viewpoints of suitability with the usage environment, user-friendliness, etc. is provided. In the two-way communication apparatus, a plurality of microphones (MC 1 to MC 6 ) radially arranged in a horizontal direction are located at equal distances from a receiving and reproduction speaker ( 16 ). The plurality of microphones (MC 1 to MC 6 ) are located in pairs from the center of the receiving and reproduction speaker ( 16 ). Surface of a sound reflection plate ( 12 ) facing the side surfaces of a speaker housing ( 14 a) are curved to a flared shape and diffuse the sound output from an upper sound output opening ( 14 c) in all orientations in the horizontal direction by cooperating with the sound reflection surface ( 14 a). A DSP ( 25 ) receives as input sound pickup signals of one pair of the microphones, selects the microphone for which the highest sound is detected, and transmits the sound pickup signal to the two-way communication apparatus of the other party via a telephone line.
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