How to reduce background noise in Teams on Mac

Check the built-in setting

Microsoft’s current instructions say noise suppression is enabled by default. From the main window, open Settings and more → Settings → Devices. During a call, open More actions → Audio settings to find the control.

Controls can vary between app versions and managed accounts. If you see a different layout, use the current Microsoft instructions rather than following an old screenshot. First confirm whether your existing suppression is already on.

Choose the intended microphone

Open the microphone selection in Teams. A display, dock, headset and MacBook can all provide inputs with plausible names. Select the one you mean to use, then speak at your normal volume and check the level.

If you want KleenMic to process the audio, select the physical microphone in KleenMic and KleenMic Microphone in Teams. If you choose the physical input directly in Teams, the signal takes a different route and bypasses KleenMic.

Name the sound before choosing a fix

A fan, keyboard vibration, another person speaking and loudspeaker echo are different problems. Note whether the unwanted sound happens only while you speak, during pauses or when someone else talks. This makes your next change more deliberate.

For keyboard noise, start with microphone distance and desk vibration. For echo, try headphones as a diagnostic step and check whether another device in the room has also joined with audio. For silence, investigate permissions and routing before changing suppression.

Use a filtered input without overdoing processing

Run a private test with the dedicated filter enabled and the meeting app at a normal or gentle setting. Read a sentence with quiet consonants and a pause, then type while repeating it. Ask whether words remain clear.

If the voice becomes thin or unstable, change one processing control and repeat. A room that sounds silent between words is not a useful improvement if the listener has to guess what you said. Our KleenMic guide includes a simple listening check.

After a headset or dock reconnects

Check the input in both apps again. A device name being visible does not prove that it is still the active source. Use the expected physical microphone in KleenMic, then reselect its virtual microphone in Teams if necessary.

If the physical microphone also fails elsewhere, focus on its connection or macOS permission. If it works elsewhere but not in Teams, focus on Teams’ device selection and the current meeting. The troubleshooting guide separates those checks.

If the meeting needs music or room sound

Noise suppression is designed around a speech-focused call. Microsoft documents different suppression behaviour for different sound types. For a music lesson or demonstration, review the appropriate audio options and test with a listener before the session. Do not assume that a setting that helps a spoken meeting will preserve an instrument.

Keep the configuration that actually serves the meeting. If built-in Teams controls already solve the problem, a separate filter is optional.

Common questions

Is Teams noise suppression normally on?

Microsoft’s current documentation says it is enabled by default. Check the setting in your installed version and account.

Why can Teams hear my room even though KleenMic is on?

Teams may still be using the physical microphone directly. Confirm that its selected input is KleenMic Microphone, then test again.