 An early system focused only on engine noise was developed by Lotus and licensed for the 1992 Nissan Bluebird models sold in Japan.Lotus later teamed with Harman in 2009 to develop a more complete noise reduction system, including road noise, tire noise, and chassis vibrations.One benefit of active noise control is that the car can weigh less, with less sound-deadening material used, and without a heavy balance shaft in the engine.