US 12,254,861 B2
Active noise reduction system, active noise reduction method, and non-transitory computer-readable storage medium
Toshio Inoue, Saitama (JP); and Xun Wang, Saitama (JP)
Assigned to HONDA MOTOR CO., LTD., Tokyo (JP)
Filed by HONDA MOTOR CO., LTD., Tokyo (JP)
Filed on Mar. 22, 2023, as Appl. No. 18/188,140.
Claims priority of application No. 2022-051631 (JP), filed on Mar. 28, 2022.
Prior Publication US 2023/0306951 A1, Sep. 28, 2023
Int. Cl. G10K 11/178 (2006.01)
CPC G10K 11/17881 (2018.01) [G10K 11/17817 (2018.01); G10K 11/17819 (2018.01); G10K 11/17823 (2018.01); G10K 11/17825 (2018.01); G10K 2210/12 (2013.01)] 10 Claims
OG exemplary drawing
 
9. An active noise reduction method, comprising:
acquiring a plurality of noise signals output from a plurality of noise microphones;
selecting a reference signal and an error signal from among the plurality of noise signals, the reference signal corresponding to a noise, the error signal corresponding to an error between the noise and a canceling sound;
generating a correction reference signal by removing a component of the canceling sound from the reference signal; and
generating a control signal based on the correction reference signal, the control signal being a signal for controlling the canceling sound.