active – All about car

Noise cancellation is a pretty nifty science, even if it has been around for awhile. By projecting sound waves at an inverted frequency to those coming in, systems are able to decrease the overall noise heard. In a pair of noise-cancelling headphones, this means music untainted by the sounds of whatever noisy thing is nearby. In a car, it means a quiet cabin mostly free of the unwanted sounds coming from the engine and road. Hyundai Motor Group recently announced its new Road Active Noise Control (RANC), which improves on old tech (ANC) to reduce road noise by up to an additional 3dB, giving the Korean automaker an industry-best interior noise cancellation system. Old systems relied on insulation and dampers to passively kill sound, which ultimately resulted in extra weight and a faint, low-frequency buzz seeping through. The ANC system, on the other hand, uses software and components like controllers and microphones to measure and reduce noise. It’s like this: the mics pick up a sound, the software analyses it, and then the speakers spit out the inverse waves, thus cancelling it altogether. But that process was limited by the software, which struggled to get the cancellation done in the 0.009 seconds it takes for road or engine noise to reach the ears of passengers, says Hyundai. The new RANC will do the deed in just 0.002 seconds. “Using an acceleration sensor, RANC calculates the vibration from the road to the car and the control computer analyzes road noise,” the brand explains in a release. “As its computation and signal transfer speeds are optimized, it only takes 0.002 second to analyze the noise and produce an inverted soundwave, generated by the DSP (Digital Signal Processor).” “The microphone constantly monitors the road noise cancellation status, and sends the information to the DSP. RANC 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.”Hyundai anticipates the system working particularly well within the cabins of electric vehicles which, without combustion engines beneath them, will be particularly susceptible to road noise more than engine noise. The RANC system will debut in an unnamed upcoming Genesis
Origin: Hyundai’s Active Noise Control tech is a world-first

The Land Rover Defender will be heavily updated when it makes its 2020 re-debut, and will include tonnes of new features lacking on previous models, like an active air suspension system.Top Gear recently had the chance to check out the new Defender prototype, and one of the most important upgrades available on the truck is an optional active air suspension.Besides being height-adjustable, the setup is also more off-road-capable than a traditional coil-spring suspension.One of the big goals for the new Defender was to make it more composed on the road than any previous generation.The air system actively monitors temperature in the dampers and protects the vehicle by changing the parameters of the suspension as youre driving, says Andy Deeks, Defenders durability and reliability program boss.Land Rovers have typically been made to handle any terrain, and this time the brand is proving it by testing 200 new prototypes all around the world in various climates. To make matters worse (or better, for buyers) Land Rover has also strapped the Defender to a machine that shakes it for 24 hours a day, seven days a week, for two months straight, to simulate 10 years of wear. To be a global car you need lots of different benchmarks, because what the Middle East market considers to be the benchmark car is different to America, Europe, China The old Defender is tough, because its uncomfortable to drive quick, says Deeks.Whereas this thing is very comfortable to drive quickly. And as a result, its been designed to be super durable and robust.The 2020 Defender will be offered in three traditional wheelbases, 90, 110, and 130, with each being available with six different
Origin: 2020 Land Rover Defender gets active air suspension