Technology » Notes » New Hyundai technology will save on noise isolation

  • New Hyundai technology will save on noise isolation

    Hyundai has developed a new system of active noise reduction, which successfully fights against extraneous sounds penetrating the cabin when driving. Its sensors and computing unit detect and analyze signals faster, reducing the average noise level by three decibels.

    The development of the RANC (Road Noise Active Noise Control) system and its commercialization took six years. Hyundai was assisted in this by scientists from the Korea Institute of Advanced Technologies, which Harman employees joined in the adaptation phase to mass production. The company has patents in Korea and North America for the location of sensor systems and algorithms for selecting a signal for jamming.

    Using the data of the accelerometer, the RANC block calculates the vibration load parameters, and the central computer analyzes the noise coming from the road. Calculation and transmission of a signal to a digital signal processor, which sends sound waves in antiphase through the speakers, takes 0.002 seconds. For comparison: the current system of active noise reduction requires 0.009 seconds. Moreover, the analysis takes place in real time separately for the driver, passenger and the second row of seats.