WhatsApp is currently working on bringing its own in-app noise cancellation for voice and video calls. This has been spotted in the latest beta version of WhatsApp for Android, so it’s still actively being worked on.
This feature automatically filters out background noise to make conversations clearer. So if you’re surrounded by traffic or crowds, or if you’re in a windy environment, this will hopefully help you be heard better by those you’re talking to.
This can be enabled and disabled at will, as you can see in the screenshots above. The toggle is available in the call menu. It is going to be enabled by default.
The new feature is being gradually rolled out to beta testers, and if everything goes smoothly in the beta app, it will presumably make its way to all WhatsApp users on Android in the coming weeks or months.