| 摘要 |
A multi-point control unit (MCU) for a multi-point connected conference system is disclosed in which to attain low power consumption and enhance sound quality, when a speaker detection circuit 4 judges that the number of conference terminals having transmitted a voiced compressed code is one, a first selector 6 directly transmits compressed voice to a second selector 16 without decoding the voice, and the second selector 16 outputs the compressed voice to a distribution circuit 18. Thereby, since a voice signal is transmitted to the conference terminal without passing through a decoder 8, and the like, the power necessary for a processing is reduced, and the deterioration of sound quality by the voice processing, and the like are prevented from occurring.
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