US 12,260,869 B2
Decoding audio bitstreams with enhanced spectral band replication metadata in at least one fill element
Lars Villemoes, Järfälla (SE); Heiko Purnhagen, Sundbyberg (SE); and Per Ekstrand, Saltsjöbaden (SE)
Assigned to DOLBY INTERNATIONAL AB, Dublin (IE)
Filed by DOLBY INTERNATIONAL AB, Dublin (IE)
Filed on Apr. 11, 2024, as Appl. No. 18/633,112.
Application 16/932,479 is a division of application No. 16/568,802, filed on Sep. 12, 2019, granted, now 10,734,010, issued on Aug. 4, 2020.
Application 18/633,112 is a continuation of application No. 18/318,443, filed on May 16, 2023, granted, now 12,094,477.
Application 18/318,443 is a continuation of application No. 17/831,080, filed on Jun. 2, 2022, granted, now 11,664,038, issued on May 30, 2023.
Application 17/831,080 is a continuation of application No. 16/932,479, filed on Jul. 17, 2020, granted, now 11,367,455, issued on Jun. 21, 2022.
Application 16/568,802 is a continuation of application No. 16/269,161, filed on Feb. 6, 2019, granted, now 10,453,468, issued on Oct. 22, 2019.
Application 16/269,161 is a continuation of application No. 16/208,325, filed on Dec. 3, 2018, granted, now 10,262,669, issued on Apr. 16, 2019.
Application 16/208,325 is a continuation of application No. 15/546,965, granted, now 10,262,668, issued on Apr. 16, 2019, previously published as PCT/EP2016/055202, filed on Mar. 10, 2016.
Claims priority of provisional application 62/133,800, filed on Mar. 16, 2015.
Claims priority of application No. 15159067 (EP), filed on Mar. 13, 2015.
Prior Publication US 2024/0355345 A1, Oct. 24, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G10L 19/16 (2013.01); G10L 19/035 (2013.01); G10L 19/24 (2013.01); G10L 21/038 (2013.01)
CPC G10L 19/167 (2013.01) [G10L 19/035 (2013.01); G10L 19/24 (2013.01); G10L 21/038 (2013.01)] 2 Claims
OG exemplary drawing
 
1. An audio processing device comprising:
a decoding subsystem configured to decode at least a portion of a block of an encoded audio bitstream, wherein the block of the encoded audio bitstream includes:
a fill element with an identifier indicating a start of the fill element and fill data after the identifier, wherein the fill data includes an extension payload, the extension payload includes spectral band replication extension data, and the extension payload is identified with a four bit unsigned integer transmitted most significant bit first and having a value of ‘1101’ or ‘1110’, and, wherein the spectral band replication extension data includes:
a spectral band replication header, spectral band replication data, and
wherein the extension payload further includes a spectral band replication extension element after the spectral band replication data, and wherein the flag is included in the spectral band replication extension element,
wherein the fill data further includes:
at least one flag identifying whether enhanced spectral band replication processing is to be performed on audio content of the block of the encoded audio bitstream, and
enhanced spectral band replication metadata which does not include one or more parameters used for both spectral patching and harmonic transposition, wherein the enhanced spectral band replication metadata is metadata configured to enable at least one eSBR tool which is described or mentioned in the MPEG USAC standard and which is not described or mentioned in the MPEG-4 AAC standard.