(19)
(11) EP 3 745 744 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
31.03.2021 Bulletin 2021/13

(43) Date of publication A2:
02.12.2020 Bulletin 2020/49

(21) Application number: 20176223.4

(22) Date of filing: 25.05.2020
(51) International Patent Classification (IPC): 
H04S 3/00(2006.01)
(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: 29.05.2019 GB 201907601

(71) Applicant: Nokia Technologies Oy
02610 Espoo (FI)

(72) Inventors:
  • VÄÄNÄNEN, Riitta
    00250 Helsinki (FI)
  • VESA, Sampo
    00510 Helsinki (FI)
  • LAITINEN, Mikko-Ville
    02130 Espoo (FI)
  • VIROLAINEN, Jussi
    02210 Espoo (FI)

(74) Representative: Nokia EPO representatives 
Nokia Technologies Oy Karakaari 7
02610 Espoo
02610 Espoo (FI)

   


(54) AUDIO PROCESSING


(57) An apparatus for processing an input audio signal comprising multiple channels, the apparatus comprising: means for deriving, based on the input audio signal, a first signal component, comprising at least one input channel, and a second signal component, comprising multiple input channels, wherein the first signal component is dependent upon at least a first portion of a spatial audio image conveyed by the input audio signal, and the second signal component is dependent upon at least a second portion of the spatial audio image that is different to the first portion;
cross-channel mixing means for cross-channel mixing of a plurality of input channels; means for directing the second signal component to the cross-channel mixing means for cross-channel mixing of at least some of the multiple input channels of the second signal component to produce a modified second signal component;
bypass means for enabling the first signal component to bypass the cross-channel mixing means; and
means for combining the first signal component and the modified second signal component into an output audio signal comprising two output channels configured for rendering by headphone apparatus.










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