Noise reduction: a clearer microphone in class

Noise reduction quiets steady background noise — a fan, a TV, the street — so the other person hears your voice clearly. It is off by default; you turn it on from the class's Video settings. It works the same for teachers and students.

Turn it on

• On a computer, press the small arrow beside Camera and choose Video settings; on a phone, press More, then Video settings.
• In the Audio section choose Noise reduction: Off, Standard or Strong.
• The first time you turn it on you confirm once. Standard is a gentle reduction that keeps voices natural; Strong removes the most noise.

Before you turn it on

• Uses more of your device's processing power. Turn it off if your class stutters or your phone gets hot.
• The first time it runs it downloads about 10 MB, once.
• Headphones with a microphone give the clearest sound.

How it works

• It runs entirely on your device (an AI model called DeepFilterNet3). Nothing about your voice or your room is sent to us.
• If your browser cannot run it, the option is not shown. If your device is too slow or the filter has a problem, it turns itself off and your microphone keeps working, unchanged.
• Your choice is remembered in this browser.

Which browsers

Chrome and Edge 91 or newer, Firefox 89 or newer, and Safari 16.4 or newer, on a device with a microphone.

Updated 2026-11-06