US 12,284,494 B2
Sound control device of vehicle and method for controlling the same
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 Aug. 18, 2022, as Appl. No. 17/890,633.
Claims priority of application No. 10-2021-0174410 (KR), filed on Dec. 8, 2021.
Prior Publication US 2023/0179917 A1, Jun. 8, 2023
Int. Cl. H04R 3/02 (2006.01)
CPC H04R 3/02 (2013.01) [H04R 2499/13 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for controlling a sound control device provided in a vehicle, the method comprising:
obtaining an input signal including at least one of a reference signal of an accelerometer or an error signal obtained from a sound signal of a microphone;
adjusting low frequency components of the input signal based on magnitudes of the low frequency components of the input signal and a preset reference magnitude;
generating a noise control signal based on the adjusted input signal; and
transmitting the noise control signal so that a speaker outputs the noise control signal,
wherein the reference magnitude is determined in advance based on an output limit of the speaker within a frequency band including the low frequency components of the input signal, and
wherein the adjusting of the input signal comprises adjusting an average magnitude of the low frequency components of the input signal to be less than or equal to the reference magnitude when the average magnitude of the low frequency components of the input signal is greater than the reference magnitude.