ACTIVE NOISE CONTROL SYSTEM

WIPO Patent Application WO/2019/103017

A1

This active noise control system (500) is provided with at least one noise cancelling speaker for emitting sound waves for cancelling sound. At least one noise cancelling speaker includes a piezoelectric speaker (10). The piezoelectric speaker (10) is provided with a piezoelectric film (35), a fixing surface (17) which contacts a support body that supports the piezoelectric speaker (35), and a film holding unit (55) which is arranged between the piezoelectric film (35) and the fixing surface (17). (i) The film holding unit (55) includes an adhesive layer and the fixing surface (17) is formed from the surface of the adhesive layer, and/or (ii) the film holding unit (55) includes a porous layer.

KOMOTO Yusuke (1-2 Shimohozumi 1-chome, Ibaraki-sh, Osaka 80, 〒5678680, JP)
HISHIKI Tomoaki (1-2 Shimohozumi 1-chome, Ibaraki-sh, Osaka 80, 〒5678680, JP)
OTO Kohei (1-2 Shimohozumi 1-chome, Ibaraki-sh, Osaka 80, 〒5678680, JP)
YAMAMOTO Saori (1-2 Shimohozumi 1-chome, Ibaraki-sh, Osaka 80, 〒5678680, JP)
SEKIGUCHI Yuka (1-2 Shimohozumi 1-chome, Ibaraki-sh, Osaka 80, 〒5678680, JP)

JP2018/042909

May 31, 2019

November 20, 2018

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NITTO DENKO CORPORATION (1-2 Shimohozumi 1-chome, Ibaraki-shi Osaka, 80, 〒5678680, JP)

G10K11/178; E04B1/82; H04R17/00

JPS6381599U	1988-05-28
JP2015135443A	2015-07-27
JPH08265897A	1996-10-11
JP2010226405A	2010-10-07

KAMADA Koichi (8th Fl, UMEDA PLAZA BLDG. ANNEX 4-3-25, Nishitenma, Kita-ku, Osaka-sh, Osaka 47, 〒5300047, JP)

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