(19)

(11)

EP 2 856 772 A1

(12)

(43) Date of publication: 08.04.2015 Bulletin 2015/15 (21) Application number: 13729418.7 (22) Date of filing: 28.05.2013

(51) International Patent Classification (IPC):  H04R 1/10(2006.01) (86) International application number: PCT/IB2013/001070 (87) International publication number: WO 2013/182881 (12.12.2013 Gazette 2013/50)

(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 (30) Priority: 04.06.2012 IT RE20120043 (71) Applicant: GD International S.r.l. 43121 Parma (PR) (IT)	(72) Inventor: ZECCA, Gabriele I-43121 Parma (IT) (74) Representative: Corradini, Corrado et al Ing. C. Corradini & C. S.r.l. Via Dante Alighieri 4 42121 Reggio Emilia 42121 Reggio Emilia (IT)