How do I fix echo and poor audio on Teams and Zoom calls?
Last updated:
Echo and poor audio on Teams and Zoom calls almost always trace to one of five causes, and the fix order matters: acoustic echo cancellation misconfigured on the room device, wrong audio device selected on the room PC, USB hub or cable issues, platform noise suppression interfering, and the echo actually originating at the far end. Work through them in that order before changing hardware.
The cause-by-fix matrix:
| Symptom | Most likely cause | Fix |
|---|---|---|
| Persistent echo, both ends hear it | AEC disabled or two mics fighting (room mic + laptop mic both unmuted) | Confirm only one input device is active; enable AEC on the bar (Logitech RoomMate, Poly Studio X, Yealink) |
| Robotic or chopped audio | Platform AI noise suppression too aggressive | Teams: set noise suppression to Low; Zoom: AI Companion noise suppression off or Low |
| Audio drops mid-call | USB peripheral disconnect or hub power | Move bar to a powered USB 3 port direct on the host; replace cheap hub with shielded |
| Far end echoes only when you speak | Far end's mic is picking up their speaker | The echo is at the other end, not yours; ask them to mute or fix their AEC |
| Quiet or muffled voice | Wrong default mic, or mic gain too low | Check Windows / MacOS audio device priority; set the room mic as default input |
Two specifics worth knowing. First, AEC has to know which speaker pairs with which mic. On bars (Logitech Rally Bar, Poly Studio X, Yealink MeetingBar) this is automatic. On split systems (separate ceiling mics + amplified speakers) it has to be configured in the DSP, and a wrong configuration will route reference signal to the wrong channel and create persistent echo even though everything looks right on paper. Second, Teams Premium and Zoom AI Companion noise suppression can mask underlying acoustic issues but also cause robotic-sounding audio when set high; Low is the right default for most rooms.
If the audio fault is repeatable in one room and the room is acoustically reflective (glass walls, hard floor, no soft surfaces), see the meeting room echo guide for the room-level fix. If it's intermittent across multiple rooms, the video conferencing configuration or a peripheral fault is the more likely cause and structured remote diagnostics will surface it faster than another site visit.
Quick reference: check AEC config first, then audio device priority, then USB hub power, then platform noise suppression, then suspect far-end. Echo is at the end producing it, not the end hearing it.
Related questions
Need help with this on a real project?
Strive AV designs, supplies, installs and supports commercial AV across the UK and internationally.
Talk to us
