| 摘要 |
PROBLEM TO BE SOLVED: To reduce power consumption of a multi-spot control unit(MCU) in a multi-spot connecting conference system. SOLUTION: When the number of conference terminals sending up a voice compression code is judged to be one by a speaker detecting circuit 4, a first selector 6 sends the compressed voice directly to a second selector without decoding and the selector 16 outputs the compressed voice to a distribution circuit 18. Thus, since a speech signal is transmitted to the conference terminals without passing through a decoder 8, etc., power required for processing can be reduced an no deterioration of sound quality by speech processing, etc., occurs. |
