US 11,948,587 B2
Layered coding for compressed sound or sound field representations
Sven Kordon, Wunstorf (DE); and Alexander Krueger, Burgdorf (DE)
Assigned to DOLBY INTERNATIONAL AB, Dublin (IE)
Filed by DOLBY INTERNATIONAL AB, Dublin (IE)
Filed on Mar. 13, 2023, as Appl. No. 18/182,883.
Application 16/938,024 is a division of application No. 16/695,741, filed on Nov. 26, 2019, abandoned.
Application 16/695,741 is a division of application No. 15/763,820, granted, now 10,529,343, issued on Jan. 7, 2020, previously published as PCT/EP2016/073969, filed on Oct. 7, 2016.
Application 18/182,883 is a continuation of application No. 17/561,262, filed on Dec. 23, 2021, granted, now 11,626,119.
Application 17/561,262 is a continuation of application No. 16/938,024, filed on Jul. 24, 2020, granted, now 11,232,801, issued on Jan. 25, 2022.
Claims priority of provisional application 62/361,461, filed on Jul. 12, 2016.
Claims priority of provisional application 62/361,416, filed on Jul. 12, 2016.
Claims priority of application No. 15306589 (EP), filed on Oct. 8, 2015; and application No. 15306653 (EP), filed on Oct. 15, 2015.
Prior Publication US 2023/0215446 A1, Jul. 6, 2023
Int. Cl. G10L 19/008 (2013.01); H04S 3/00 (2006.01)
CPC G10L 19/008 (2013.01) [H04S 3/008 (2013.01); H04S 2420/11 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A method of decoding a compressed Higher Order Ambisonics (HOA) sound representation of a sound or sound field that is encoded in a plurality of hierarchical layers using layered encoding, the method comprising:
receiving a bit stream containing the compressed HOA representation corresponding to the plurality of hierarchical layers that include a base layer and at least an enhancement layer, wherein at least one of the plurality of hierarchical layers includes components of a basic compressed sound representation of the sound or sound field, the components corresponding to a plurality of monaural signals,
determining that a parameter CodedVVecLength equals 1 and that at least some components of a vector corresponding to the compressed HOA representation are implicitly set to zero; and
decoding the compressed HOA representation based on basic side information that is associated with the base layer and based on enhancement side information that is associated with the enhancement layer, wherein the basic side information indicates that at least an individual monaural signal represents a directional signal with a direction of incidence, and wherein the enhancement side information includes information that allows prediction of missing portions of the sound or sound field.