Method, device and equipment for actively reducing noise in vehicle and medium

The invention discloses a method, device and equipment for actively reducing noise in a vehicle and a medium, and belongs to the technical field of vehicles. The method comprises the steps that in the active noise reduction process of a vehicle, a residual noise signal in the vehicle is obtained; if the amplitude of the residual noise signal is larger than a preset noise threshold value, a current chassis vibration signal and an original noise signal in the vehicle are determined, and the original noise signal is a noise signal in the vehicle when active noise reduction is not carried out; and determining a new noise reduction signal based on the current chassis vibration signal and the original noise signal, and inputting the new noise reduction signal into the vehicle so as to reduce the noise in the vehicle. According to the method, when the driving road condition and the vehicle speed of the vehicle are changed or the service life is prolonged, the good noise reduction effect is still kept in the vehicle,