Internal noise while driving… Car noise canceling

Car driving noise affects not only the environment around the road but also the interior of the car. Silentium, which develops noise canceling technology based in Israel, developed a car noise canceling function to reduce the noise inside the car. This noise-cancelling function is expected to be installed for the first time in the world on Jaguar Land Rover vehicles.

The noise canceling function developed by Sirencium basically adopts the structure as seen in high-end noise canceling headphones. When the noise canceling function is activated, six accelerometers placed on the vehicle chassis detect unnecessary noise while driving and send a signal to the vehicle’s control unit.

Then, the software developed by Sirenchium creates anti-noise by inverting the noise signal 180 degrees, which should be ignored. This structure is transmitted from the speaker inside the vehicle, and the noise when driving and the anti-noise corresponding to it arrive at the same time to the passengers’ ears, and the two noises cancel each other. By selecting the noise canceling function, it is said that 90% of unnecessary noise can be removed in a wide frequency band from 20Hz to 1kHz.

The actual test was conducted by checking the noise at 50 km/h driving. A vehicle driving with the noise canceling function turned on generates a driving sound. The noise level is about 58-60dB. 8dB seems to be a slight difference, but when 8dB increases, the amount of energy in sound increases more than 6 times. When the noise canceling function is turned off on the smartphone, the driving sound in the vehicle becomes louder at once. The noise is 66dB, which is about 8dB. When the noise canceling function is selected again, the driving sound is reduced in an instant.

Sirencium emphasizes that the noise canceling function can provide a quiet and refined driving experience to the occupants, not only prevent driver fatigue, but also reduce dependence on sound-absorbing materials used in automobiles and lead to weight reduction of the body. Active Acoustics will change the way drivers perceive and respond to sound by reducing and emphasizing noise in vehicles.

The technology is already in the practical phase, and Jaguar Land Rover has decided to hire it. Jaguar Land Rover said it could provide customers with new technology to eliminate unnecessary noise, which will help improve passenger experience and happiness through quieter and reduce load and response time. Noise-cancelling technology not only improves traffic safety, but can also improve customer health and quality of life, and as the world can change customer expectations for personal mobility after Corona 19, there is a possibility that in-vehicle comfort will be required more than before. It says there is. Related information can be found here .