Road ANC(RANC) Solution

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Road-noise ANC vs. Engine-noise ANC

  • 01 Engine-noise ANC
    • Quasi-periodic narrow-band signal
    • In 1992, first commercialized in Nissan passenger cars
  • 02 Road-noise ANC
    • Irregular and random wide-band signal
    • In 2019, first commercialized in Hyundai SUVs
    • Road noise is the primary source of noise for electric vehicles due to reduced motor noise compared to internal combustion engines
    • Essential technology in the era of electric vehicles

Road-noise ANC Solution

  • 01 3-Axis Accelerometer based reference input
    • 4 (12-channel) or 6 (18-channel) 3-axis accelerometers
  • 02 8 to 12 physical error microphones
  • 03 8 to 24 virtual microphones
  • 04 Time-Frequency FxLMS based Multi-channel ANC with Virtual sensing technique
    12ch XL x 8ch mic x 8 spk x 8 virtual mic RANC
  • 05 RANC Performance Tuning Software
    RANC Performance Tuning Software

    ※ Click on the image to enlarge.