公开(公告)号：US10157605B2

公开(公告)日：2018-12-18

申请号：US15381546

申请日：2016-12-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Tsuyoshi Maeda ,  Yoshifumi Asao ,  Masaaki Higashida ,  Mitsuhiro Tosa ,  Kaname Tomita ,  Toshihide Abe

IPC: G10K11/16 ,  G10K11/178 ,  H04R1/02

Abstract: A noise reduction device is used together with a shell which surrounds at least a part of the periphery of reclinable seat. The device includes a plurality of noise microphones, a noise controller, and control speakers. Control speakers output a sound based on a control-sound signal that is generated by the noise controller. Each of noise microphones is accommodated in back wall configuring the shell and is set back from a surface of the back wall.