Patent ID: 11967331
Assignee: DOLBY INTERNATIONAL AB
Field: nan (nan)
Classification: CPC nan | IPC G

Claim 0:
1. An audio processing device comprising:
a bitstream payload deformatter configured to demultiplex a block of an encoded audio bitstream;
a decoding subsystem coupled to the bitstream payload deformatter and configured to decode at least a portion of the block of the 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.