This technology, introduced on the new Jaguar F-PACE and
XF, as well as on the Range Rover Velar, reduces unwanted sound peaks by 10dB and overall noise level by 3-4dB – the equivalent of lowering the audio system by four "volumes". This significant reduction in exposure to
low frequency noise up to 300 Hz contributes, depending on
Jaguar Land Rover, to prevent driver fatigue on long journeys,
fatigue that would increase the average reaction time of a driver by 16.72% compared to that of an alert driver.
In practice, it is with the help of sensors placed on each wheel that active noise reduction constantly monitors surface vibrations and calculates the reverse sound waves necessary to cancel the noise heard by occupants. This real-time control isolates and suppresses noise from potholes and uneven surfaces. The cancellation sound is played through the audio system as the vehicle checks seat occupancy to optimize the performance of the active reduction system for the driver and all passengers. A lot of effort and technology, for something that basically… you can't hear.