(19)

(11)

EP 2 862 369 A1

(12)

(43) Date of publication: 22.04.2015 Bulletin 2015/17 (21) Application number: 12731186.8 (22) Date of filing: 15.06.2012

(51) International Patent Classification (IPC):  H04R 27/00(2006.01) H04R 29/00(2006.01) (86) International application number: PCT/JP2012/003947 (87) International publication number: WO 2013/186823 (19.12.2013 Gazette 2013/51)

(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) Inventors: JONAN, Tomohiro Kobe-shi Hyogo 650-0046 (JP) IKOMA, Tsuneo Kobe-shi Hyogo 650-0046 (JP) (74) Representative: Global IP Europe Patentanwaltskanzlei  Pfarrstraße 14 80538 München 80538 München (DE)