公开(公告)号：US20170186417A1

公开(公告)日：2017-06-29

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: G10K11/178 ,  H04R1/02

CPC classification number: G10K11/178 ,  G10K11/17857 ,  G10K2210/1281 ,  G10K2210/1283 ,  G10K2210/3027 ,  G10K2210/3044 ,  H04R1/023 ,  H04R1/025 ,  H04R2201/021 ,  H04R2499/13

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.