公开(公告)号：US12156004B2

公开(公告)日：2024-11-26

申请号：US17924890

申请日：2021-04-28

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Nobuhiko Washio ,  Akihisa Kawamura ,  Atsushi Sakaguchi ,  Isao Kakuhari

IPC: H04R3/12 ,  G10K11/178 ,  H04R1/40

Abstract: A loudspeaker device includes: 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 switching 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 obtained by inverting a phase of the input sound signal is inputted to the other of the first loudspeaker and the second loudspeaker.

公开(公告)号：US12200435B2

公开(公告)日：2025-01-14

申请号：US17918032

申请日：2021-05-24

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Isao Kakuhari ,  Nobuhiko Washio ,  Takeshi Sakai

IPC: H04R1/34 ,  H04R1/02

Abstract: A sound reproduction device includes a cabinet and a loudspeaker disposed inside the cabinet, the cabinet includes a baffle including a plurality of through holes provided in a ring-shaped area, and the loudspeaker is disposed in an orientation in which sound is emitted toward the plurality of through holes.