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The software was added in 2021.40 series.
Active Road Noise Reduction
Only for Model X 2021+ and Model S 2021+
Available Worldwide
Tesla 2021.40 release notes
Your vehicle now has the ability to actively reduce low-frequency road noise while driving on rough surfaces. To accomplish this, the system uses the seat microphones to measure the noise in the cabin, then generates anti-noise through the speakers to create quiet zones around the occupants.
To access, tap Audio Settings > Options > Active Road Noise Reduction
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