(19)

(11)

EP 4 823 770 A1

(12)

(43) Date of publication: 21.10.2026 Bulletin 2026/43 (21) Application number: 24817905.3 (22) Date of filing: 29.11.2024

(51) International Patent Classification (IPC):  B06B 1/02(2006.01) H04R 3/04(2006.01) B06B 1/06(2006.01) H04R 17/10(2006.01) (52) Cooperative Patent Classification (CPC): B06B 1/0284; B06B 2201/55; B06B 1/0622; B06B 1/0666; H04R 17/10 (86) International application number: PCT/EP2024/084188 (87) International publication number: WO 2025/124939 (19.06.2025 Gazette 2025/25)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: GE KH MA MD TN (30) Priority: 13.12.2023 GB 202319050 (71) Applicant: Sonair AS 0484 Oslo (NO)	(72) Inventors: WANG, Dag Thorstein 0484 Oslo (NO) TYHOLDT, Frode 0484 Oslo (NO) BOOIJ, Wilfred Edwin 0484 Oslo (NO) HOLO, Tarjei Naadland 0484 Oslo (NO) (74) Representative: Dehns  10 Old Bailey London EC4M 7NG London EC4M 7NG (GB)