US 12,452,619 B2
Spatial audio representation and rendering
Mikko-Ville Laitinen, Espoo (FI); and Juha Vilkamo, Helsinki (FI)
Assigned to Nokia Technologies Oy, Espoo (FI)
Appl. No. 17/927,418
Filed by Nokia Technologies Oy, Espoo (FI)
PCT Filed May 7, 2021, PCT No. PCT/FI2021/050339
§ 371(c)(1), (2) Date Nov. 23, 2022,
PCT Pub. No. WO2021/240053, PCT Pub. Date Dec. 2, 2021.
Claims priority of application No. 2007904 (GB), filed on May 27, 2020.
Prior Publication US 2023/0199417 A1, Jun. 22, 2023
Int. Cl. H04S 7/00 (2006.01); G10L 19/008 (2013.01)
CPC H04S 7/30 (2013.01) [G10L 19/008 (2013.01); H04S 2400/11 (2013.01); H04S 2400/15 (2013.01); H04S 2420/01 (2013.01); H04S 2420/03 (2013.01); H04S 2420/11 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus comprising:
at least one processor; and
at least one memory storing instructions that, when executed with the at least one processor, cause the apparatus to:
receive a spatial audio signal, the spatial audio signal comprising at least one audio signal and spatial metadata associated with the at least one audio signal;
generate at least one decorrelated audio signal based on the at least one audio signal;
determine at least one control parameter configured to control an amount of the at least one decorrelated audio signal within at least two output audio signals for spatial audio reproduction, wherein the at least one control parameter is at least based on at least one target further property of the at least two output audio signals and at least one of: the spatial metadata or at least one property determined based on the at least one audio signal; and
generate the at least two output audio signals for the spatial audio reproduction based on the spatial audio signal and the at least one decorrelated audio signal, wherein the amount of the at least one decorrelated audio signal within at least two output audio signals is controlled based on the at least one control parameter;
wherein the at least one target further property comprises an audio type or covariance.