	US 11,996,075 B2
	Sound control device and control method thereof
Jung Keun You, Suwon-si (KR); Myoung Ok Lee, Seoul (KR); Kaang Dok Yee, Yongin-si (KR); Chi Sung Oh, Hwaseong-si (KR); and Mun Hwan Cho, Seoul (KR)
Assigned to HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA CORPORATION, Seoul (KR)
Filed by HYUNDAI MOTOR COMPANY, Seoul (KR); and Kia Corporation, Seoul (KR)
Filed on Jul. 14, 2022, as Appl. No. 17/865,281.
Claims priority of application No. 10-2021-0184099 (KR), filed on Dec. 21, 2021.
Prior Publication US 2023/0197047 A1, Jun. 22, 2023
Int. Cl. G10K 11/178 (2006.01); H04R 3/12 (2006.01)

CPC G10K 11/17815 (2018.01) [G10K 11/1783 (2018.01); G10K 11/17854 (2018.01); H04R 3/12 (2013.01); G10K 11/17883 (2018.01); H04R 2499/13 (2013.01)]

9 Claims

1. A method for controlling a sound control device in a vehicle, the method comprising:

obtaining, by a signal collector, a reference signal obtained from a sensor and an error signal obtained from a sound signal of a microphone;

estimating, by an estimator, a road surface environment corresponding to a road surface on which the vehicle is traveling based on the reference signal; and

adjusting, by a gain controller, a gain for generating a noise control signal having a magnitude within a preset range, based on at least one of the road surface environment or the error signal,

wherein the adjusting includes:

increasing the gain to generate the noise control signal having the magnitude greater than or equal to a preset minimum performance of a speaker, when the gain controller concludes that a road surface roughness corresponding to the road surface environment is smaller than a preset reference value.