IT House December 18 news, Tesla is for the new Model S and Model X to launch its active reduction of road noise features, which is one of the features of the 2021.44.5 system update.

"Your vehicle now has the ability to actively reduce low-channel road noise when driving on rough roads," the official said. To achieve this, the system uses a microphone on the seat to measure the noise inside the cabin, which then creates a noise resistance through the speakers, creating a quiet area around the occupants. To enable this feature, click Audio Settings > Options > Actively reduce road noise. ”
IT Home understands that actively reducing road noise only supports Tesla's flagship models, the new Model S and Model X. This is because the function requires the corresponding hardware, and the active noise reduction microphone is installed on the front seats of both models. Currently, The Model 3 and Model Y do not have this hardware installed.
A video shared by Tesla Model S owner Michael Hopwood shows him testing the feature while driving on a bumpy gravel road. During his driving, he felt that when the active road noise reduction function was activated, the ambient noise in the cabin would be reduced, although the effect did not seem to be obvious.
Considering that this is only the first time Tesla has actively introduced a road noise reduction feature, it is certain that the feature will be significantly improved in the near future. Tesla is, after all, known for perfecting the functionality of its vehicles through OTA updates.
By applying reverse sound waves, active noise reduction solves low-frequency noise very well, and the effect on high-frequency noise is very limited. The road noise happens to be low-frequency noise, which is just easy to be eliminated by active noise reduction.