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EP 2 875 652 A1

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(43) Date of publication: 27.05.2015 Bulletin 2015/22 (21) Application number: 12745575.6 (22) Date of filing: 20.07.2012

(51) International Patent Classification (IPC):  H04R 29/00(2006.01) G08B 29/06(2006.01) H04R 27/00(2006.01) (86) International application number: PCT/JP2012/004639 (87) International publication number: WO 2014/013530 (23.01.2014 Gazette 2014/04)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME (71) Applicant: Toa Corporation Kobe-Shi, Hyogo 650-0046 (JP)	(72) Inventor: JONAN, Tomohiro Kobe-shi, Hyogo 650-0046 (JP) (74) Representative: Global IP Europe Patentanwaltskanzlei  Pfarrstraße 14 80538 München 80538 München (DE)