Vehicle active noise reduction system, active noise reduction method and computer storage medium

Abstract

The invention provides a vehicle active noise reduction system, an active noise reduction method and a computer storage medium. The method comprises the steps: collecting vibration waves at human earpositions in a vehicle, wherein the vibration waves at the human ear positions re formed by superposing a first noise elimination signal and a first noise signal, the first noise elimination signal isa sound signal transmitted to the human ear positions through an audio played by a loudspeaker, and the first noise signal is a sound signal directly transmitted to the human ear positions by vehiclesuspension vibration waves; calculating a first correction signal according to the vibration waves at the human ear positions and the first noise signal; and correcting reverse waves of the vehicle suspension vibration waves by the first correction signal to form an audio for loudspeaker playing, and playing the audio through the loudspeaker. By using the method, the reverse waves of the vehiclesuspension vibration waves can be calculated and corrected to form the audio played by the loudspeaker, and the audio is played by the loudspeaker, so that the vehicle suspension vibration waves can be counteracted, the road noise is effectively reduced, and people in the vehicle feel comfortable.

Description

technical field [0001] The invention relates to the field of automotive electronics, in particular to a vehicle active noise reduction system, an active noise reduction method and a computer storage medium. Background technique [0002] At present, the sound insulation effect of cars is generally poor, which causes many different noises during the driving process of the car, such as tire noise, wind noise, road noise and engine noise, which will destroy the beautiful driving atmosphere and reduce the user experience. [0003] When a car passes through different road surfaces, the unevenness of the road surface will be transmitted to the tires, then through the suspension, and finally to the body, which will cause the body to generate subtle vibration waves, which belong to the scope of road noise and will give the car It can bring a bad experience to the people in the car, and cannot meet the user's requirements for the comfort of the driving environment in the car. In resp...

AI Technical Summary

Problems solved by technology

[0002] At present, the sound insulation effect of cars is generally poor, which causes many different noises during driving, such as tire noise, wind noise, road noise and engine noise, which will destroy the beautiful driving atmosphere and reduce the user experience

[0003] When a car passes through different road surfaces, the unevenness of the road surface will be transmitted to the tires, then through the suspension, and finally to the body, which will cause the body to generate subtle vibration waves, which belong to the scope of road noise and will give the car The people in the car will bring a bad experience, and cannot meet the user's requirements for the comfort of the driving environment in the car

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