Microsoft Teams Rooms - HDMI audio sounding echoey / bathroom like

Dear @Ranjit Bhogal, 

Good day! Welcome to Microsoft Q&A forum! 

Based on your description, I understand that you’re experiencing echoey audio when sharing HDMI content in a Teams call, even though HDMI audio sounds normal during in‑room presentations. You also found that during in‑room use, HDMI audio plays only through the ‘Default Speaker,’ but during a Teams call it uses both the ‘Default Speaker’ and the ‘Speaker for Conferencing.’ Changing the ‘Default Speaker’ fixes the echo in Teams calls, but then HDMI audio no longer works for local presentations. You’re looking for a way to resolve this issue.

I sincerely apologize for the inconvenience caused by this issue.

To understand the situation better and provide you with the most suitable support, could you confirm the following information: 

• When the echo occurs, is it heard by people in the meeting room, remote participants, or both?
• Has anything in the room setup changed recently, such as firmware updates, audio routing adjustments?
• Are you using any custom audio routing or echo cancellation settings?
• Does the issue happen consistently in every Teams call, or only intermittently?
• When the HDMI audio plays through both the Default Speaker and the Speaker for Conferencing, are both of those outputs physically connected to room speakers?

Your confirmation would be very helpful in ensuring you receive the most suitable support!

If you’re able to share a bit more about your situation, I might be able to suggest some helpful next steps. 

Please understand that our initial response does not always resolve the issue immediately. However, with your help and more detailed information, we can work together to find a solution.

Kindly let me know when there are updates or if you need further assistance. Any updates you’re able to share would be really helpful. I appreciate your time and look forward to hearing how things are going! 

Thank you for your time and patience.

If you have extra questions about this answer, please click "Comment". 

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The echo/reverb during HDMI sharing in a Teams call is consistent with multiple audio paths and/or audio processing being applied to the same signal.

Based on the behavior described:

• In-room playback (no call) uses only the Default Speaker path from the HDMI ingest.
• In a Teams call, HDMI audio is being sent both to Default Speaker and into the Speaker for Conferencing / echo‑cancelling path, so the same program audio is effectively being reprocessed as if it were far‑end audio, which creates the “bathroom/echoey” effect.

Use these steps to mitigate, using only supported behaviors from the documentation:

1. Ensure only one viable conferencing audio path
   • Teams Rooms is designed to use a single viable conferencing speaker and microphone pair. If multiple devices or paths are active in the same room, echo and feedback can occur.
   • Make sure that only the Q‑SYS/room loudspeaker path is configured as the Speaker for Conferencing and that no other speakers (for example, display speakers, console speakers, or other USB audio devices) are active in the room during calls.
   • If any additional speakers are active in the room (for example, on another PC or device joining the same meeting), mute or disable them; multiple active audio devices in the same room are known to cause echo and screeching.
2. Disable audio enhancements on the conferencing device
   • On the Teams Rooms console, go to Settings → Windows Settings and sign in as administrator.
   • Open Control Panel → Hardware and Sound → Sound.
   • On the Playback tab, select the Teams‑certified USB audio device (the echo‑cancelling speakerphone / Q‑SYS USB endpoint), choose Properties → Advanced, and under Signal Enhancements clear Enable audio enhancements.
   • Repeat the same on the Recording tab for the corresponding microphone device.
   • Select OK and restart the Teams Rooms device.
   • This removes driver‑level processing that can degrade audio or interact badly with echo cancellation during calls.
3. Keep HDMI ingest on a single, non‑HDCP path
   • Ensure the HDMI ingest path into the Logitech Tap is the only path used for program audio into the room system and that any HDMI switches or processors in front of the Tap have HDCP disabled. HDCP or additional processing on the HDMI chain can interfere with Teams Rooms’ HDMI ingest behavior and audio handling.
4. Verify Teams Rooms device health
   • In the Microsoft Teams Rooms Pro Management portal or Teams admin center, confirm that the Conferencing Speaker and Conferencing Microphone signals are Healthy and that no warnings indicate fallback to non‑viable devices (for example, console speakers or display speakers). If fallback is occurring, reconfigure cabling or device selection so that only the intended Q‑SYS/room audio path is used for conferencing.
5. If issues persist
   • Update Windows, Teams Rooms app, and all device firmware to the latest versions.
   • If the HDMI ingest module or console is part of a certified bundle (for example, Logitech Tap with a specific compute), verify with the OEM that the recommended firmware and cabling are in place and that the HDMI ingest module is correctly seated and configured.

These steps align the room so that HDMI audio is played only once through the intended room speakers, with echo cancellation applied only to microphone pickup, eliminating the “bathroom” sound during Teams calls while preserving in‑room HDMI playback.

References:

• The microphone or speaker status is Unhealthy
• The HDMI ingest status is Unhealthy
• Known issues with Teams Rooms on Windows
• Multiple audio devices in the same room may cause audio quality issues