Processors calculate the amount of sound needed to deal with road noise. Excessive noise or insufficient noise are two sides of the same coin, and the emergence of dramatic advances in audio technology has led to improvements in in-car entertainment systems as well as the reduction of noise. Secondary effects can also be expected, as with the advent of these technologies, changes and improvements such as weight loss, improved fuel / energy consumption, reduced pollution, and finally more space in cars will occur.
The common challenges of better sound and lower noise pollution are things that sound experts are working on in collaboration with the automotive industry. This includes working together with Hyundai and Herrman, a company that specializes in automotive audio systems Sonnheiser, which specializes in headphones, microphones and communications with Continental (one of the giants of the automotive industry). Active audio removal is a big leap forward, not inherently new technology. But it has been used in some luxury cars for some time, but the company Hyundai, which works closely with Harman in this regard, has gone a step further, with officials saying that the active noise canceling technology currently used in Hyundai production vehicles has done well with sounds. Which are constantly heard (like sound Motor buzz when moving on highways and freeways). But the new active road noise cancellation system, abbreviated RANC, has been designed and built to deal with NVH (abbreviated as Noise, Vibration, and Harshness), which has been upgraded to a higher level.
The key and an important part of the new active road noise cancellation system are the microphones that are installed around the car and, for example, near the fender arch, and the sounds that are produced by the tires colliding with the road surface are recorded by these microphones and A central processor is sent where the wavelength of the opposing sound is measured and transmitted through the audio system to encounter and neutralize road noise.
Using microphones on the roof of the car allows the processor to change the frequency of the sound for each occupant, and the amount of change depends on the amount of sound at that point in the cabin. Humans can detect road noise in 9,000ths of a second, but the processors used in Hyundai are faster, meaning they can detect these noises in 2,000 milliseconds, so the system is able to detect annoying noises before humans can hear them. Try to neutralize them, so the occupants of a Hyundai car do not notice them
Hyundai engineers claim that RANC technology, currently used in Genesis vehicles, can reduce noise by up to 3 decibels and halve road noise by half compared to other active noise canceling systems.
Elsewhere, the previously mentioned Sennheiser and Continental companies have been doing their research inside a room to find out how to create a whole new way of sounding without the use of speakers. In Continental’s innovative technology called Ac2ated instead Conventional loudspeakers use conventional pulse motors to excite specific surfaces to produce sound, which has the function of string simulators, such as a guitar, where there is a hole along the strings that amplifies the sound. Sonnheiser software algorithms called ZD AMBEO make up the majority of Continental Activators, which can be installed in the front pillars of car roofs, rafters on door panels or roofs.
Designed and built by experts, the system integrates AMBEO mobility with the AC2alod Continental audio system, creating a natural sound and creating different perspectives. Sennheiser officials Continental audio systems used in modern cars can be said to weigh up to 40 kg, but with the help of Sennheiser this weight can be reduced by up to 90%, in addition, there is no need for car cabin designers to Try to place the speakers in the cabin or subwoofer in the cargo space, so it is possible to create a more clean cabin and cargo space.
Automakers can also use less noise-absorbing materials in the car, as they use this technology to eliminate excess noise, which results in a reduction in overall car weight and less pressure on it, as well as a pollution prevention system.
Who needs headphones?
To experience while moving. The name of this method with the loobled Sound Zare system or Harman company is researching and working on methods through which each occupant of the car can use a good sound without using headphones and using a set of mini speakers that are carefully targeted. And the quality of the isolated area is sound, by which all the occupants of a car can listen to their favorite music and sound while talking to each other separately, without disturbing others. Harman calls the system croes talk carrelation. The technology can also virtually transfer an in-car phone conversation from one seat to another.