公开(公告)号：US20210225350A1

公开(公告)日：2021-07-22

申请号：US16759312

申请日：2018-06-06

Applicant: BYD COMPANY LIMITED

Inventor： Yaxuan SUN ,  Yongji ZHAO

IPC: G10K11/175

Abstract: The present disclosure provides an active noise reduction method, a system, and a new energy vehicle. The active noise reduction method includes: obtaining a frequency of a high-frequency noise signal in an acoustic environment, constructing and generating a harmonic masking signal according to the frequency of the high-frequency noise signal, where the harmonic masking signal includes a harmonic signal and a masking signal, and the harmonic signal is a subharmonic wave of the high-frequency noise signal, and inputting the harmonic masking signal into a sound playback apparatus for playback to output a noise reduction construction sound, and performing noise reduction on the acoustic environment.