A Study On Improving The Sound Quality Of Electric Vehicles By Using Subharmonics

Compared with the traditional vehicles, the gear whistles of new energy vehicles are particularly obvious. because of the new energy vehicles lack of engine noise masking and high-speed high-torque motor characteristics. High-frequency motor whistling noise greatly affects the sound quality of the car. The research in this paper provides a method to improve the sound quality in the vehicle. By using the basic principles of psychoacoustics and music acoustics, a fractional harmonic signal of the motor howling signal is constructed . The fractional harmonic signal and the motor howling noise The signal is constructed according to the basic principles of music acoustics. The constructed sound can effectively improve the car's irritability and improve the sound quality. The research in this paper provides a method and idea for the improvement of high frequency noise, the method is instructive for similar noise handling issues.