AUDIO ENCODER AND AUDIO DECODER WITH METADATA INFORMATION ON PROGRAM OR SUBSTREAMS STRUCTURE Russian patent published in 2017 - IPC G10L19/16 

FIELD: information technology.

SUBSTANCE: encoded audio bitstream that comprises audio data and metadata is received. Said metadata and audio data are extracted from said encoded audio bitstream. Metadata represent or contain metadata information on program and metadata of substreams structure. Coded audio bitstream contains a sequence of frames serving as features of at least one audio program, said metadata information on program and metadata of substream structure serve as features of said program. Each of frames comprises at least one segment of audio data. Each said segment of audio data comprises at least some of audio data, each frame of at least a subset of frames comprises a segment of metadata, and each said segment of metadata comprises at least some of metadata information on program and at least some of metadata of substream structure. Segment of metadata is located in reserved data field selected from group consisting of ignore data field, addbsi field, auxdata fields or combinations thereof.

EFFECT: improved quality of encoded audio data.

20 cl, 8 dwg, 2 tbl