| 摘要 |
PROBLEM TO BE SOLVED: To separate simultaneously emitted voices to the respective voices of persons, to reproduce them, to miniaturize a device and to reduce cost in the device for recording/reproducing a plurality of voices uttered in a telephone conference system and reproducing and confirming the emitted voices when a minute is prepared. SOLUTION: The voices of subscribers A to G attending a conference are made to pass through an automatic gain controller AGC and are grouped. They are mixed by voice adders 1-1, 1-2 and 1-3, and a mixed voice is recorded in recording/reproducing parts 1-4, 1-5 and 1-6 of respective groups. The recorded voice is separated into the emitted voices of the respective persons by a conference voice separating/reproducing circuit 20 so as to output the voices. The conference voice separating/reproducing circuit 20 has an output terminal for outputting the reproduced voices of the recording/reproducing parts 1-4, 1-5 and 1-6 as they are and another output terminal for outputting the difference of the reproduced voices. A selection switch selects one of the output terminals, and outputs the voice in which the voices of only a speaker being the object of listen-in is included even if the simultaneously emitted voices are recorded. |
