DECODING OF AUDIO BIT STREAMS WITH EXTENDED COPYING OF SPECTRAL BAND METADATA IN AT LEAST ONE FILLING ELEMENT Russian patent published in 2025 - IPC G10L19/35 G10L19/24 G10L21/38 

Abstract RU 2837262 C2

FIELD: physics.

SUBSTANCE: invention relates to means for encoding and decoding audio with spectral band extended copy metadata. Encoded audio bitstream is demultiplexed. Encoded audio bitstream is decoded, wherein said encoded audio bitstream includes: a filling element with an identifier indicating the beginning of the filling element, and filling data after the identifier. Filling data includes: at least one flag identifying whether basic form of spectral band copying or extended form of spectral band copying for audio content of encoded audio bitstream should be performed. Basic form of copying a spectral band includes a spectral insert. Extended form of copying the spectral band includes harmonic transposition.

EFFECT: high efficiency of encoding and decoding audio.

9 cl, 3 tbl, 7 dwg

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RU 2 837 262 C2

Authors

Villemoes, Lars

Purnhagen, Heiko

Ekstrand, Per

Dates

2025-03-28Published

2021-11-16Filed