公开(公告)号：US09820047B2

公开(公告)日：2017-11-14

申请号：US15246933

申请日：2016-08-25

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Akihisa Kawamura ,  Toshiyuki Matsumura ,  Isao Kakuhari ,  Shuji Saiki ,  Satoshi Takayama ,  Kazuki Honda ,  Takafumi Yuasa

IPC: H04R3/04 ,  H04R29/00 ,  H04R1/08 ,  H04R3/12 ,  H03G5/16

CPC classification number: H04R3/04 ,  H03G5/165 ,  H04R1/08 ,  H04R3/12 ,  H04R29/001 ,  H04R29/002

Abstract: A method is provided for causing a processor included in a speaker system to execute operations. The operations include acquiring, using a measurement microphone, reflected sound information regarding an effect of sounds that are played back by a plurality of speakers having predetermined directivity and that are reflected off an object, where the plurality of speakers are included in the speaker system. The operations also include calculating correction coefficients used to correct acoustic characteristics of the plurality of speakers on the basis of the acquired reflected sound information. The operations further include correcting the acoustic characteristics of the plurality of speakers using the calculated correction coefficients.

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.

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.