New energy vehicle and automatic acoustic system and automatic acoustic control method thereof

Abstract

The invention provides a new energy vehicle and an automatic acoustic system and an automatic acoustic control method thereof in order to solve the problems that in the prior art, only low-frequency noise or high-frequency noise needs to be eliminated, the processing mode is not comprehensive enough, and the sound quality of the sound environment still needs to be further improved. The automatic acoustic control method comprises the following steps: acquiring a noise signal in a sound environment of a new energy vehicle, generating a harmony structure signal according to the high-frequency noise signal, according to the low-frequency noise signal, generating a phase de-noising signal which is inversely equal to the low-frequency noise in amplitude, playing the harmony structure signal, playing a noise reduction structure sound fused with the high-frequency noise in the new energy vehicle sound environment so as to perform noise reduction processing on the high-frequency noise, and playing the phase de-noising signal which is inversely equal to the low-frequency noise in amplitude so as to eliminate the low-frequency noise. According to the automatic acoustic control method providedby the invention, no matter what working conditions are in the vehicle, a driver and passengers have a very high-quality sound quality environment.

Description

technical field [0001] The invention relates to the field of new energy vehicles, in particular to the field of active sound control of new energy vehicles. Background technique [0002] From the perspective of environmental protection, all sounds that affect people's normal study, work and rest, and all "unwanted sounds" that people have on certain occasions are collectively referred to as noise. Such as the roar of machines, the sound of motors and whistles of various vehicles, the noise of people and various sudden sounds, etc., are all called noise. From a physical point of view, noise is the sound produced when the sounding body vibrates randomly. Noise pollution is a sensory public hazard, which is related to people's subjective wishes and people's living conditions, so it has different characteristics from other public hazards. [0003] Noise generally includes low-frequency noise, intermediate-frequency noise and high-frequency noise. Generally, noise with a freque...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the problems in the prior art that only consider eliminating low-frequency noise or high-frequency noise, its processing method is not comprehensive enough, and the sound quality of its acoustic environment still needs to be further improved, the present invention provides a new energy vehicle and its active sound system and Active Sound Control Methods

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