| 摘要 |
<p>The circuit is of the type containing n input channels (1) receiving speech signals originating from n participants and n speech-return output channels (2) on which are re-emitted speech signals derived from the speech signals received as input, as well as detector means (9) for periodically determining whether, at a given instant, each of the participants is speaking or listening. According to the invention, there are provided selector means co- operating with the detector means in order to: - transmit to a first buffer circuit (14) the speech signal emitted by the speaker detected first; - transmit to a second buffer circuit (15) the speech signal emitted by the speaker detected second; - block transmission of the speech signals corresponding to the n-2 other participants not detected as speakers or possibly detected as speakers over and above the first and second speakers; - transmit back to the second speaker the speech signal received by the first buffer circuit; - transmit back to the first speaker the speech signal received by the second buffer circuit; and - transmit back to the n-2 other participants a speech signal corresponding to a sum of the data contained in the first and second buffer circuits. <IMAGE></p> |
