US 12,156,004 B2
Loudspeaker device
Nobuhiko Washio, Osaka (JP); Akihisa Kawamura, Osaka (JP); Atsushi Sakaguchi, Kyoto (JP); and Isao Kakuhari, Nara (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Appl. No. 17/924,890
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
PCT Filed Apr. 28, 2021, PCT No. PCT/JP2021/016894
§ 371(c)(1), (2) Date Nov. 11, 2022,
PCT Pub. No. WO2022/123806, PCT Pub. Date Jun. 16, 2022.
Claims priority of application No. 2020-203136 (JP), filed on Dec. 8, 2020.
Prior Publication US 2023/0199390 A1, Jun. 22, 2023
Int. Cl. H04R 3/12 (2006.01); G10K 11/178 (2006.01); H04R 1/40 (2006.01)
CPC H04R 3/12 (2013.01) [G10K 11/17857 (2018.01); H04R 1/403 (2013.01); H04R 2430/20 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A loudspeaker device comprising:
a first loudspeaker that outputs a sound;
a second loudspeaker that is adjacent to the first loudspeaker in a predetermined direction and outputs a sound in a direction intersecting with a direction in which the first loudspeaker outputs the sound; and
a phase control circuit that switches between a first switching state and a second switching state, the first switching state being a state in which an input sound signal is inputted to both the first loudspeaker and the second loudspeaker, the second switching state being a state in which the input sound signal is inputted to one of the first loudspeaker and the second loudspeaker while an inverted sound signal is inputted to an other of the first loudspeaker and the second loudspeaker, the inverted sound signal being obtained by inverting a phase of the input sound signal.