Hyundai Group announces new Road Active Noise Control system

Hyundai Motor Group has announced the development of its Road Active Noise Control (RANC) system. The system dramatically reduces noise within the cabin of a vehicle.

With the first-ever RANC technology, Hyundai Motor Group is able to greatly improve in-cabin quietness. The new system can analyse various types of noise in real-time and produce inverted soundwaves to reduce cabin noise levels.

Using an acceleration sensor, the RANC system calculates the vibration from the road to the car and the control computer analyses road noise. It only takes two miliseconds to analyse the noise and produce an inverted soundwave, generated by a Digital Signal Processor (DSP).

The microphone constantly monitors the road noise cancelation status, and sends the information to the DSP. The RANC system is able to conduct accurate noise analysis and rapid computation to combat road noise for the driver's seat, the passenger seat and rear seats separately.

Based on tests evaluating road surface, vehicle speed, and different seating positions, the RANC system was able to reduce in-cabin noise by three decibels. Thanks to this achievement, the Group can potentially decrease the amount of unsprung weight in a vehicle by utilising fewer sound-insulating parts and dampers as compared to before.