DECODING OF AUDIO BIT STREAMS WITH SPECTRAL BAND EXTENDED COPY METADATA IN AT LEAST ONE FILLING ELEMENT Russian patent published in 2024 - IPC G10L19/16 G10L21/38 

FIELD: computer engineering.

SUBSTANCE: invention relates to computer engineering for processing audio data. Result is achieved due to the following steps: demultiplexing the encoded audio bit stream unit; and decoding a portion of the encoded audio bit stream, wherein the encoded audio bit stream unit includes: a filling element with an identifier indicating the beginning of the filling element, and filling data after the identifier, wherein the filler data include: a flag identifying whether spectral band extended copy processing is to be performed for the audio content of the at least one encoded audio bit stream; and spectral band extended copy metadata which do not include one or more parameters used for both spectral insertion and harmonic transposition, wherein the spectral band extended copy metadata are metadata configured to provide at least one eSBR tool which is described or referred to in the MPEG USAC standard and which is not described or referred to in the MPEG-4 AAC standard.

EFFECT: high quality of copying a spectral band of an audio signal.

5 cl, 7 dwg, 3 tbl