New Software Will Run Car Silently On Rough Roads

Guohua Sun from the University of Cincinnati has developed an adaptive, active algorithm that would enable the use of a rapid-response sound wave, which would counter and significantly remove car made noises on rough roads.

Researchers Guohua Sun from the University of Cincinnati have developed a new software that is capable to give silent ride by minimising sudden and unexpected road noises. When a car hits potholes or other roadway obstacles sudden and unexpected road noises occurs. Active noise-control (ANC) systems capture the noise being generated by a car and then produce an opposite-phase sound wave which keep silent to the noise produced by cars.

When this alternatively peaking sound wave encounters the original one, the overlap results into a sound, which is significantly diminished. Until now, in a numerical model, this system has outperformed standard ANC, which works for the regular thrum of tyre on tarmac.

Existing ANC systems depend on the assumption that all noise from the contact between the car and road will follow a pattern. This works for the regular thrum of tyre on tarmac, but when a car hits a bump on the road, the conventional algorithm breaks down, and the noise gets through to rattle the driver’s ears.Now, Sun claims that he expects to see a real decrease in sound of at least 50 percent when the system will be put up on trial in Ford cars next year.

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