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EP 4 005 239 A1

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(43) Date of publication: 01.06.2022 Bulletin 2022/22 (21) Application number: 19773745.5 (22) Date of filing: 05.09.2019

(51) International Patent Classification (IPC):  H04R 25/00(2006.01) G10L 21/0208(2013.01) G10K 11/175(2006.01) (52) Cooperative Patent Classification (CPC): H04R 25/505; G10L 2021/02166; G10L 21/0216 (86) International application number: PCT/EP2019/073734 (87) International publication number: WO 2021/043408 (11.03.2021 Gazette 2021/10)

(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 (71) Applicant: Huawei Technologies Co., Ltd. Longgang District Shenzhen, Guangdong 518129 (CN)	(72) Inventors: NIEMISTO, Riitta 16440 Kista (SE) HUTTUNEN, Anu 16440 Kista (SE) (74) Representative: Maiwald Patent- und Rechtsanwaltsgesellschaft mbH  Elisenhof Elisenstraße 3 80335 München 80335 München (DE)