US 12,003,947 B2
Sound field optimization method and device performing same
Shuyuan Sun, Shenzhen (CN); Yiming Meng, Shenzhen (CN); and Hao Yin, Shenzhen (CN)
Assigned to AAC Microtech (Changzhou) Co., Ltd., Changzhou (CN)
Filed by AAC Microtech (Changzhou) Co., Ltd., Changzhou (CN)
Filed on Aug. 4, 2022, as Appl. No. 17/880,704.
Claims priority of application No. 202111637003.2 (CN), filed on Dec. 29, 2021.
Prior Publication US 2023/0209293 A1, Jun. 29, 2023
Int. Cl. H04R 5/02 (2006.01); H04S 7/00 (2006.01)
CPC H04S 7/302 (2013.01) [H04R 5/02 (2013.01); H04R 2430/20 (2013.01); H04R 2499/13 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A sound field optimization method used in an intelligent cockpit audio system having a first speaker mounted at a back of a front seat and a second speaker mounted on a headrest of a rear sea, the sound field optimization method comprising steps of:
building up a first acoustic response model based on audio parameters, an acoustic response transfer function and a first acoustic transfer function corresponding to a reference position inside a controlled area to be calculated for each speaker, the controlled area being a division of a rear seat currently taken by a rear passenger;
building up a second acoustic response model based on the audio parameters, the acoustic response transfer function and a second acoustic transfer function corresponding to the reference position inside an uncontrolled area to be calculated; the uncontrolled area being a division of a rear seat currently not taken by a rear passenger;
building up a first acoustic response difference calculation model based on the first acoustic response model and the second acoustic response model;
calculating optimal solution of audio parameters corresponding to the audio parameters to be calculated for each of the speakers with maximization of acoustic response difference between the controlled area and the uncontrolled area as constraint condition for the first acoustic response difference calculation model;
controlling each of the speakers to output audio signals according to the corresponding audio parameters.