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EP 4 399 882 A1

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(43) Date of publication: 17.07.2024 Bulletin 2024/29 (21) Application number: 22777123.5 (22) Date of filing: 07.09.2022

(51) International Patent Classification (IPC):  H04R 3/00(2006.01) G06F 3/16(2006.01) H04M 1/72403(2021.01) H04R 29/00(2006.01) G10L 25/60(2013.01) (52) Cooperative Patent Classification (CPC): G06F 3/165; G06F 3/167; G10L 25/60; H04M 1/72403; H04R 3/005; H04R 2499/11; H04R 29/004; H04M 1/6008 (86) International application number: PCT/US2022/042671 (87) International publication number: WO 2023/038911 (16.03.2023 Gazette 2023/11)

(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: 10.09.2021 WO PCT/CN2021/117685 15.09.2021 US 202163244261 P 10.11.2021 EP 21207498 (71) Applicant: Dolby Laboratories Licensing Corporation San Francisco, CA 94103 (US)

(72) Inventors: LI, Kai San Francisco, California 94103 (US) LUO, Hao San Francisco, California 94103 (US) GAN, Lei San Francisco, California 94103 (US) LI, Xu San Francisco, California 94103 (US) WEN, Weiwei San Francisco, California 94103 (US) MA, Yuanxing San Francisco, California 94103 (US) (74) Representative: AWA Sweden AB  Box 5117 200 71 Malmö 200 71 Malmö (SE)