Hyundai develops World's first road noise active control technology
Hyundai Motor Group announced the development of the world's first Road Noise Active Noise Control (RANC) system. The first-ever system dramatically reduces noise within the cabin of a vehicle.
RANC builds on the Group's current Active Noise Control (ANC) technology, which actively reduces noise by emitting soundwaves inverted to incoming noise.
With the first-ever RANC technology, Hyundai Motor Group is able to greatly improve in-cabin quietness. The new system can analyze various types of noise in real-time and produce inverted soundwaves.
For example, there are different types of road noises that the new technology can process, such as resonant sounds created between tires and wheels or rumble sounds coming up from the road.
Based on tests evaluating road surface, vehicle speed, and different seating positions, RANC was able to reduce in-cabin noise by 3dB. That 3dB level is roughly half the noise level as compared without RANC.
Thanks to this achievement, the Group can potentially decrease the amount of unsprung weight in a vehicle, utilizing fewer sound-insulating parts and dampers as compared with before.
The technology will begin to be applied to an upcoming Genesis model.