HARMAN and HMC launch road noise silencer
HARMAN International, a wholly owned subsidiary of Samsung Electronics focused on connected technologies for automotive, consumer and enterprise markets, has launched the world’s first active road noise cancellation system for a production vehicle in partnership with Hyundai Motor Company (HMC).
The Road-Noise Active Noise Control (RANC) system reduces the in-cabin noise level by cancelling out unwanted sound originating from the tires and road surfaces while driving. The Genesis GV80 SUV, that had its global reveal on January 15 in Korea, is the first production car to feature the technology, which is based on HARMAN’s HALOsonic suite of noise management technologies.
HARMAN has built an expertise in controlling sound and noise in the vehicle. Together with its partner HMC that sells cars under the brands of Genesis, Hyundai and Kia globally, HARMAN is supporting HMC to bring the RANC system to a production vehicle. Debuting on the Genesis GV80 SUV, the system actively reduces noise in real-time by emitting soundwaves inverted to the incoming noise.
The RANC control processor uses reference signals received from acceleration sensors placed strategically along the suspension and chassis to predict noise transferred into the cabin and to generate an anti-noise wave in real-time. Compute time and signal transfer speed are optimized to allow for an analysis of the intruding noise and the generation of the anti-noise within milliseconds, thereby preventing the noise from reaching the occupants’ ears. Error microphones constantly monitor the system performance in each seat location.