US 11,838,741 B2
In-vehicle independent sound zone control method, system and related device
Shuyuan Sun, Shenzhen (CN); Yiming Meng, Shenzhen (CN); Hao Yin, Shenzhen (CN); and Henglizi Zhang, Shenzhen (CN)
Assigned to AAC Microtech (Changzhou) Co., Ltd., Changzhou (CN)
Filed by AAC Microtech (Changzhou) Co., Ltd., Changzhou (CN)
Filed on Jun. 2, 2022, as Appl. No. 17/830,364.
Claims priority of application No. 202111671087.1 (CN), filed on Dec. 31, 2021.
Prior Publication US 2023/0217200 A1, Jul. 6, 2023
Int. Cl. H04S 7/00 (2006.01); H04R 1/02 (2006.01); H04R 1/40 (2006.01); H04R 5/02 (2006.01)
CPC H04S 7/30 (2013.01) [H04R 1/025 (2013.01); H04R 1/403 (2013.01); H04R 5/02 (2013.01); H04R 2201/401 (2013.01); H04R 2201/403 (2013.01); H04R 2499/13 (2013.01); H04S 2400/11 (2013.01); H04S 2420/01 (2013.01)] 4 Claims
OG exemplary drawing
 
1. An in-vehicle independent sound zone control method, applied to a vehicle, comprising:
presetting a control area and a non-control area, wherein the control area is a listening area where a passenger is located in the vehicle and an in-vehicle independent sound zone is formed, and the non-control area is a remaining area in the vehicle except the control area;
arranging a speaker array behind a front seat of the vehicle for generating a first acoustic response, and arranging a headrest speaker at a headrest on a rear seat of the vehicle for generating a second acoustic response;
fitting a virtual target speaker, wherein the virtual target speaker is configured to generate a target acoustic response within the control area; and
controlling a sound quality of the in-vehicle independent sound zone through a sound zone isolation processing and a sound zone sound quality optimization processing on the target acoustic response, the first acoustic response and the second acoustic response, wherein
the sound zone isolation processing comprises maximizing a difference between the first acoustic response in the control area and the first acoustic response in the non-control area, and maximizing a difference between the second acoustic response in the control area and the second acoustic response in the non-controlled region, the sound zone sound quality optimization processing comprises performing a response fitting on the first acoustic response, the second acoustic response and the target acoustic response.