| 摘要 |
PROBLEM TO BE SOLVED: To provide a call device which can prevent howling and be miniaturized and thinned, and can obtain a sense of integrity as a system even if it is used as a functional device for a wiring system. SOLUTION: The call device is provided with a speaker SP for outputting transmitted voice information; a plurality of microphones M1, M2 for collecting voices and outputting voice signals; and an IC package 35i having a built-in signal processing section for applying signal processing to each of the voice signals output from the microphones M1, M2 and transmitting the signals, which are housed in a module body 10A. The speaker SP is arranged on a rib 14 provided on the front inside of the module body 10A, a diaphragm 73 opposes the front inside of the module body 10A, and the microphone M1 has a bare chip structure and arranged in a rectangular frame-like rib 15 provided on the front inside of the module body 10A opposing the diaphragm 73 of the speaker SP. COPYRIGHT: (C)2007,JPO&INPIT |
