Problem with Audio Feedback

herbw

New Member
I am trying to live-stream a hybrid (Zoom / in-person) meeting to YouTube. Some of the attendees are in-person, and some of the attendees are remote (via Zoom). I have four microphones distributed around the room connected to a mixer input to the computer so that the remote attendees can hear comments and questions from any of the in-person attendees. And obviously, there are speakers so that the in-person attendees can hear the comments and questions from the Zoom attendees. During the meeting, I often play videos on a shared screen so that both the in-person and the Zoom attendees can see and hear the video. There is often discussion while the videos are playing.

To summarize, there are three audio sources that need to be included in the live stream:
  • Audio from the in-person attendees, that is captured by by the microphones. I have no problem with feedback for this audio source.
  • Audio from the remote (Zoom) attendees, that is output from the speakers, and inevitably picked up by the microphones. There is feedback for this audio.
  • Audio from the videos, that is output from the speakers and inevitably picked up by the microphones; There is feedback for this audio.
It is not practical to mute the microphones when none of the in-person attendees is speaking, since it is not always possible to predict in advance when one of the in-person attendees will speak.

How can I configure OBS Studio to eliminate the echo, but still ensure that audio from all three sources is captured.
 
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