'Vehicle noise canceling function' is developed to significantly reduce the noise heard in the car while driving



The running noise of a car echoes not only in the surrounding environment along the road, but also inside the car. In order to reduce the noise inside the car,

Silentium, which develops noise canceling technology based in Israel, has developed the 'noise canceling function for cars'. This noise canceling feature will be installed on Jaguar Land Rover vehicles.

Advanced, broad-band active noise cancellation now available in cars – Silentium
https://www.silentium.com/advanced-broad-band-active-noise-cancellation-now-available-in-cars/

Advanced, broad-band active noise cancellation now available in cars
https://www.autocarpro.in/news-international/israeli-firm-enables-sound-of-silence-with-broadband-active-road-noise-cancellation-77678

Headphone-style noise cancellation reduces road rumble in cars
https://www.imeche.org/news/news-article/headphone-style-noise-cancellation-reduces-road-rumble-in-cars

The noise canceling function developed by Silentium basically adopts the same mechanism as that found in high-end noise canceling headphones. When the noise canceling function is turned on, up to 6 accelerometers located on the chassis of the vehicle detect unnecessary noise generated while driving and send a signal to the control unit mounted on the vehicle.

Then, the software developed by Silentium generates anti-noise by inverting the noise signal that you want to cancel by 180 degrees. By transmitting this from the speaker inside the vehicle, the noise during driving and the corresponding anti-noise reach the ears of the occupants at the same time, and the two noises cancel each other out. Silentium explains that turning on the noise canceling feature can remove 90% of unwanted noise over a wide frequency band from 20Hz to 1kHz.



You can see how you are actually using the noise canceling function ' Active Acoustics ' developed by Silentium by watching the following movie.

Silentium Active Acoustics on road noise --YouTube


In this test, we verified the noise when driving at 50 km / h.



There is a muffled running noise in the car while the noise canceling function is turned on. The degree of noise is about 58 to 60

dB . 8dB seems to be a slight difference, but if it increases by 8dB, the amount of energy that the sound has will increase more than 6 times.



If you turn off the noise canceling function from your smartphone ...



The running noise that echoes in the car has become louder at once. The noise is about 8 dB louder and about 66 dB.



When you turn on the noise canceling function again, you can see that the running noise decreases in a blink of an eye.



Silentium's noise-cancelling capabilities can provide occupants with a quiet and sophisticated driving experience, prevent driver fatigue, and reduce the reliance on sound-insulating and sound-absorbing materials used in automobiles. Claims that it will also reduce the weight of the car body. 'Active Acoustics will change the way car manufacturers reduce, cancel and emphasize noise in cars, and the way drivers recognize and react to sound,' said Anthony Manias, head of automotive at Silentium. Said.



In addition, you can also check the case where music is played as BGM while driving in the following movie.

Silentium Active Acoustics with road noise and music --YouTube


Active Acoustics is already in practical use and has been decided by Jaguar Land Rover. 'We are committed to creating a paradise for our customers, and this new technology can remove unwanted noise from the cabin,' said Iain Suffield, Jaguar Land Rover's Advanced Technology Specialist. It helps to make the experience quieter, improve passenger well-being, and reduce cognitive load and response time. '

'Noise canceling technology can improve not only road safety, but also the health and quality of life of our customers,' said Dr. Steve Iley, Chief Medical Officer at Jaguar Land Rover. In the post-new Corona virus world where is emerging, customer expectations for private travel are expected to change, 'he said, suggesting that in-car comfort may become more demanding than ever before. did.



in Software,   Hardware,   Ride,   Science,   Video, Posted by log1h_ik