ERROR CONCEALMENT UNIT, AN AUDIO DECODER AND A CORRESPONDING METHOD AND A COMPUTER PROGRAM SUBJECTING THE MASKED AUDIO FRAME TO ATTENUATION ACCORDING TO DIFFERENT ATTENUATION COEFFICIENTS FOR DIFFERENT FREQUENCY BANDS Russian patent published in 2020 - IPC G10L19/05 

FIELD: data processing.

SUBSTANCE: invention relates to audio data processing. Technical result is achieved due to masking in frequency domain to provide error detection audio information component, subjecting to decay masked audio frames according to different attenuation coefficients for different frequency bands of the decoded audio frame preceding the lost audio frame, so as to subject at least one or more frequency bands of the decoded audio frame preceding the lost audio frame and having a relatively higher energy in terms of the spectral bin, faster than one or more frequency bands of the decoded audio frame preceding the lost audio frame and having a relatively lower energy per spectral bin.

EFFECT: high accuracy of processing audio frames.

41 cl, 26 dwg