| 摘要 |
<p>A videoconferencing system is described that is configured to select an active speaker while avoiding erroneously selecting a microphone or camera that is picking up audio or video from a connected remote signal. A determination is made whether an audio signal is above a threshold level. If so, then a determination is made as to whether a tag is present in that audio signal. If so, that signal is ignored. If not, a camera is directed toward the sound source identified by the audio signal. A determination is made whether a tag is present in the video signal from that camera. If so, the camera is redirected. If not, local tag(s) are inserted into the audio signal and/or the video signal. The tagged signal(s) are transmitted. Thus, system will ignore sound or video that has an embedded tag from another videoconferencing system.</p> |
