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(11)

EP 4 825 060 A1

(12)

(43) Date of publication: 21.10.2026 Bulletin 2026/43 (21) Application number: 24828262.6 (22) Date of filing: 06.12.2024

(51) International Patent Classification (IPC):  H04S 7/00(2006.01) (52) Cooperative Patent Classification (CPC): H04S 7/302; H04S 7/304; H04S 2400/11 (86) International application number: PCT/US2024/058803 (87) International publication number: WO 2025/128413 (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: 11.12.2023 WO PCT/CN2023/137864 21.12.2023 US 202363613203 P 23.08.2024 WO PCT/CN2024/114322 25.09.2024 US 202463698765 P (71) Applicants: Dolby Laboratories Licensing Corporation San Francisco, CA 94103 (US) Dolby International AB Dublin, D02 VK60 (IE)

(72) Inventors: YANG, Ziyu San Francisco, California 94103 (US) PURNHAGEN, Heiko San Francisco, California 94103 (US) STODDARD, Jeremy Grant San Francisco, California 94103 (US) LU, Lie San Francisco, California 94103 (US) (74) Representative: Dolby International AB Patent Group Europe  77 Sir John Rogerson's Quay Block C Grand Canal Docklands Dublin, D02 VK60 Dublin, D02 VK60 (IE)