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 

FIELD: physics.

SUBSTANCE: invention relates to computer engineering for processing audio data. Technical result is achieved due to the fact that the unit of the encoded audio bit stream includes: filling element with an identifier indicating the beginning of the filling element, and filling data after the identifier, wherein the filling data include: a flag which identifies 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, wherein the spectral band extended copy metadata include a parameter indicating whether to perform preliminary smoothing.

EFFECT: high quality of copying a spectral band.

8 cl, 7 dwg