It uses very lightweight components to do this? It is much lighter than the heavy sound-absorbing and heat-insulating material you usually run under the car floor. The accelerometer near each wheel will track the vibration transmitted from the road to the car and generate a reversing signal, which will be played through the car audio system to eliminate the sound within 0.002 seconds. Hyundai Motor said that this makes it more sensitive than microphone-based systems and can cope with irregular or changing road noise. These systems cannot listen, process information and then send out signals in time to eliminate any unstable and predictable sounds.
The microphone in the engine room provides a feedback mechanism for the system, which can send information to the signal processor and perfect the cancellation signal if possible. The purpose of the system is not only to keep the driver's seat, passenger's seat and back seat quiet. Obviously, this is a complicated algorithm.
Hyundai Motor said that when tested on various roads, speeds and seat positions, the noise in the compartment was reduced by 3 decibels, which was attributed to the logarithmic scale, and the road noise was reduced by about 50% in decibels. Hyundai Motor believes that active noise reduction (ANC) is a necessary technology for the transition to electric vehicles. If there were no engine noise, the noise of roads and winds would be more obvious.
However, this is not the first company to focus on such things. Although Ford and Toyota tried to realize ANC by using the microphone in the car as the main input, Bose's system obviously included an accelerometer near the suspension system, and more than a decade ago, Tess also introduced a similar system. Therefore, although Hyundai Motor is conducting a series of patent examinations on this new technology, we are not sure which part of the system is the first in the world-but we welcome quiet highway driving any day of the week.
Hyundai Motor said that it will launch the system on the upcoming Genesis model as soon as possible.