| 摘要 |
PROBLEM TO BE SOLVED: To provide a two-way speech apparatus that is used for two-way speeches and enhanced from the standpoints of performance, cost, dimension, adaptability to the operating environment, and user-friendliness. SOLUTION: Microphones MC1 to MC6 radially arranged in a horizontal direction are characterized in that they are located at an equal distance from a lower part reception reproduction loudspeaker 16. The microphones MC1 to MC6 are characterized in that they are located in pairs from the center of the reception reproduction loudspeaker 16. A face of a sound reflective plate 12 opposing to a side face of a loudspeaker containing part 14 is characterized in that the plane is curved in a funnel-shape to omni-azimuthally sound out the sound outputted from an upper part sound output opening 14c in a horizontal direction in cooperation with a sound reflection plane 14a. A DSP 25 receives a sound collecting signal from a pair of the microphones, selects the microphone collecting the highest tone, transmits the sound collecting signal to an opposite two-way speech apparatus via a telephone line, and lights up any of light emitting diodes LEDs 1 to 6 corresponding to the selected microphone. COPYRIGHT: (C)2005,JPO&NCIPI |
