(19)

(11)

EP 4 241 456 A1

(12)

(43) Date of publication: 13.09.2023 Bulletin 2023/37 (21) Application number: 21721228.1 (22) Date of filing: 25.03.2021

(51) International Patent Classification (IPC):  H04R 1/02(2006.01) H03F 1/00(2006.01) H04R 31/00(2006.01) (52) Cooperative Patent Classification (CPC): H04R 1/02; H04R 31/00 (86) International application number: PCT/IT2021/050081 (87) International publication number: WO 2022/097180 (12.05.2022 Gazette 2022/19)

(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 Designated Validation States: KH MA MD TN (30) Priority: 05.11.2020 IT 202000026215 (71) Applicant: Woodsound S.r.l. 31030 Casier (IT)	(72) Inventor: DOLFATO, Ennio 31030 Casier (IT) (74) Representative: Tagliafico, Giulia  Litapat Via Simone Martini, 125 00142 Roma 00142 Roma (IT)