US 12,069,465 B2
Methods, apparatus and systems for decompressing a Higher Order Ambisonics (HOA) signal
Sven Kordon, Wunstorf (DE); Alexander Krueger, Burgdorf (DE); and Oliver Wuebbolt, Hannover (DE)
Assigned to Dolby Laboratories Licensing Corporation, San Francisco, CA (US)
Filed by Dolby Laboratories Licensing Corporation, San Francisco, CA (US)
Filed on Jun. 22, 2023, as Appl. No. 18/339,368.
Application 17/010,827 is a division of application No. 16/716,424, filed on Dec. 16, 2019, granted, now 10,779,104, issued on Sep. 15, 2020.
Application 16/716,424 is a division of application No. 16/429,575, filed on Jun. 3, 2019, granted, now 10,542,364, issued on Jan. 21, 2020.
Application 16/429,575 is a division of application No. 15/891,606, filed on Feb. 8, 2018, granted, now 10,334,382, issued on Jun. 25, 2019.
Application 15/891,606 is a division of application No. 15/127,577, granted, now 9,930,464, issued on Mar. 27, 2018, previously published as PCT/EP2015/055914, filed on Mar. 20, 2015.
Application 18/339,368 is a continuation of application No. 17/864,708, filed on Jul. 14, 2022, granted, now 11,722,830.
Application 17/864,708 is a continuation of application No. 17/010,827, filed on Sep. 3, 2020, granted, now 11,395,084, issued on Jul. 19, 2022.
Claims priority of application No. 14305411 (EP), filed on Mar. 20, 2015.
Prior Publication US 2024/0007813 A1, Jan. 4, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04S 3/00 (2006.01); G10L 19/008 (2013.01); G10L 19/24 (2013.01); H04S 7/00 (2006.01)
CPC H04S 3/008 (2013.01) [G10L 19/008 (2013.01); G10L 19/24 (2013.01); H04S 7/30 (2013.01); H04S 2400/01 (2013.01); H04S 2420/11 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A method of decoding a compressed Higher Order Ambisonics (HOA) representation of a sound or a soundfield, the method comprising:
receiving a layered bit stream comprising the compressed HOA representation, wherein the compressed HOA representation comprises a base layer and an enhancement layer;
decoding the compressed HOA representation from the layered bit stream to obtain a sequence of decoded HOA representations,
wherein the base layer comprises a first subset of the sequence of decoded HOA representations that corresponds to a first set of indices, and
wherein, for each index in the first set of indices, a respective decoded HOA representation in the first subset comprises only a corresponding ambient HOA component.