5 Quick Methods to Reduce Echo in Microsoft Teams Calls on macOS

Last Tuesday, I was right in the middle of presenting a project update to ten senior managers when my coworker, Sarah, unmuted herself and said, "Hey, every time I talk, I hear my own voice blasting back at me three seconds later." Cue the sudden spike in my heart rate. I glanced down at my MacBook Pro, sweating slightly, trying to figure out why my laptop was acting like a cave in the Grand Canyon.

If you have ever had to apologize for a phantom echo haunting your remote meetings, I feel your pain. It makes you look unprofessional, disrupts the flow of conversation, and honestly, it is downright annoying for everyone involved.

After spending hours testing different settings on my own Mac and helping several colleagues fix their setups, I have pinned down the exact reasons this happens—and more importantly, how to fix it fast. Here are five simple, proven methods to stop echo on Microsoft Teams for macOS once and for all.

Why Your Mac Echoes During Teams Calls

Before we dive into the fixes, it helps to understand what causes that irritating feedback. Nine times out of ten, an echo happens because your microphone picks up sound coming out of your speakers and feeds it right back into the call.

While macOS has impressive built-in sound processing, Microsoft Teams sometimes struggles to communicate cleanly with Mac hardware drivers. This is especially true after major macOS updates or when you switch between built-in speakers, AirPods, or external monitors.

Sometimes the issue comes from aggressive software features clashing with each other—like macOS's system-level noise isolation fighting against Teams' internal noise suppression filter. The good news? You do not need to buy an expensive external microphone to fix this.

5 Step-by-Step Methods to Fix Teams Echo on macOS

Try these solutions one by one. Method 1 and Method 2 solve the issue for about 80% of users, but if you have a trickier setup, Method 5 is my secret weapon.

1. Enable Built-In Noise Suppression in Teams

Microsoft Teams has a surprisingly good native noise suppression feature built right into the app. However, macOS updates occasionally toggle it off or reset it to low.

1. Open Microsoft Teams on your Mac.
2. Click your profile picture or the three dots (...) in the top-right corner next to your profile.
3. Select Settings, then navigate to Devices on the left menu.
4. Scroll down to Noise suppression.
5. Change the drop-down menu from Auto or Low to High.

Note: Setting noise suppression to "High" uses slightly more CPU power, but on any modern M1, M2, or M3 Mac (and most late-model Intel Macs), you will not notice any performance dip at all.

2. Switch macOS Mic Mode to Voice Isolation

If you are running macOS Monterey or newer, Apple added a system-wide microphone feature that works wonders for Teams calls. It aggressively blocks background noise and speaker bleed before sound even reaches the Teams app.

1. While in a Teams call (or test call), click the Control Center icon in the top-right corner of your Mac menu bar (the two toggle switches icon).
2. Click on Mic Mode at the top of the panel.
3. Switch the selection from Standard to Voice Isolation.

This single change made the biggest difference for me when working out of coffee shops or using my MacBook's built-in speakers.

3. Lower Input Gain and Adjust Speaker Balance

When your Mac's microphone sensitivity is cranked up too high, it becomes hypersensitive. It picks up tiny ambient bounces from your laptop speakers off your desk surface.

1. Open System Settings on your Mac.
2. Click Sound in the sidebar.
3. Go to the Input tab and select your active microphone.
4. Drag the Input Volume slider down to around 50% to 65%.
5. Speak at your normal volume and check the input level meter—it should bounce comfortably in the middle, not hit the max red zone.

4. Separate Your Input and Output Devices

Using Bluetooth earbuds that attempt to handle both high-definition audio output and voice input simultaneously can overload the Bluetooth bandwidth on macOS. This lag creates a distinct 1-second delay echo.

1. In Teams, click your profile/settings icon and open Devices.
2. Under Audio devices, do not rely on the Custom Setup preset if it feels glitchy.
3. Manually select your Speakers (e.g., your external headphones or Mac speakers).
4. Manually select a distinct Microphone (e.g., your MacBook Built-in Mic or dedicated USB mic).

Separating these streams relieves Bluetooth stress and drastically reduces latency-induced feedback.

5. Restart the macOS Core Audio Daemon

When all else fails, macOS's background audio system might just be stuck in a glitched state. Instead of restarting your whole computer in the middle of a workday, you can force-restart the audio background service in five seconds.

1. Open Terminal on your Mac (press Cmd + Space, type Terminal, and hit Enter).
2. Type or paste the following command: sudo killall coreaudiod
3. Press Enter.
4. Enter your Mac administrator password when prompted (the characters won't show as you type) and hit Enter again.

Your audio will drop for about two seconds while the system service restarts itself fresh. This flushes temporary audio buffers and clears persistent echo loops instantly.

Pro Tip: If you frequently join meetings in echo-prone rooms with hardwood floors, buy a cheap desk mat or large mousepad. Soft surfaces under your Mac absorb sound reflections that built-in laptop microphones love to pick up!

Frequently Asked Questions

Why do other people hear an echo when I talk, but I don't?

If other people complain about an echo when they talk, the issue is almost certainly coming from your setup (or someone else who has unmuted). Their voice comes out of your speakers, enters your microphone, and travels back to them with a slight delay. Wearing headphones instantly fixes this specific scenario.

Why does my Mac built-in microphone suddenly start echoing after an update?

Major macOS updates often reset audio permissions or default gain levels in System Settings. When this happens, your mic sensitivity might jump back up to 100%, or third-party audio drivers might lose synchronization with Teams until you re-select your preferred devices.

Do wireless headphones like AirPods cause more echo than wired ones?

AirPods themselves rarely cause echo because their built-in beamforming mics isolate your voice well. However, if your Mac's Bluetooth connection drops to a low-bandwidth codec (like SCO mode during heavy CPU usage), it can introduce audio latency that sounds like a distinct echo to others on the call.

Final Thoughts

Audio issues are easily one of the most frustrating parts of working remotely, but you do not have to live with bad call quality. Next time you join a Teams meeting on your Mac and hear that dread-inducing echo, start by switching your Mac's Mic Mode to Voice Isolation—it takes three seconds and fixes the problem almost every time.

Got a specific Mac hardware setup that gives you trouble on Teams? Feel free to try restarting coreaudiod through Terminal; it has saved my skin more times than I care to admit. Here is to clearer, echo-free meetings!