Carnegie Mellon University

Best Practices for Using Hybrid Technology

Audio feedback can be an echo, static, or other unwanted background noise on the audio connection during your class or meeting. Follow the instructions below to manage feedback.

Reduce feedback issues at the start of your meeting

  • Mute all participants in the Zoom meeting. 
  • Instruct all in-person students that are connecting to the Zoom meeting with a personal device to not join the audio for the meeting if prompted.
    Note: To join at a later time (if needed), click Join Audio.

Disconnect audio from the Zoom meeting

If you have multiple devices with active audio in the same classroom, feedback will likely be an issue. This may occur if you are in a classroom with in-person students that are connected to the Zoom meeting and already joined audio from their personal devices. This may also be the case if you are using an iPad or other touch-enabled device for annotation and have it connected to the audio.

To resolve the issue, instruct the in-person students to disconnect their device audio from the meeting:

  • PC/Mac: Click the ^ arrow next to Mute/Unmute and select Leave Computer Audio.
  • iOS/Android: Tap More.. and then tap Disconnect Audio.

Room microphones are either integrated into the resident videoconference equipment or may be mounted at the podium in the new hybrid classroom spaces. 

To adjust the volume in a classroom with a mounted microphone (Yamaha YVC-200):

  • Within the classroom, use the volume buttons (+/-) on the microphone.

To adjust a the volume in an resident VC classroom (via touch panel):

  • Under Videoconference Controls on the touch panel, use the Videoconference Volume feature to increase/decrease the volume of remote students within the room.

The following tips will help to provide a smooth presentation for both in-person and remote students: 

  • When an in-person student asks a question, repeat it for your remote students.
  • Summarize key discussion points.
  • Instruct students to use the Chat feature in Zoom to ask questions.


To manage multiple speakers in hybrid classrooms, consider these options:

For in-person students:

  • Instruct students to disconnect their device audio from the Zoom meeting to prevent feedback.
  • Instruct students to stand within 10 feet of the room microphone to speak.
  • Introduce the student speaker and purpose.

For remote students: