ENCODER, DECODER AND AUDIO CONTENT ENCODING AND DECODING METHOD USING PARAMETERS TO IMPROVE MASKING Russian patent published in 2019 - IPC G10L19/05 G10L19/02 G10L19/12 

FIELD: calculating; counting.

SUBSTANCE: invention relates to the computer equipment. Encoder for coding speech-like content and/or general audio content, wherein encoder incorporates parameters into bit stream in certain frames, wherein parameters provide directed masking in case of loss, damage or delay of source frame, wherein the encoder generates a primary frame and a partial copy, wherein the partial copy is not a low bit rate version of the primary frame, but wherein the partial copy contains parameters, and wherein the partial copy is transmitted in the band as part of the codec payload, wherein the encoder is configured to select among a plurality of partial copy modes, which use different volumes of information and / or different sets of parameters, wherein selection of the partial copy mode is based on parameters, and wherein one of the plurality of partial copy modes is a masking mode in the frequency domain, and two of the plurality of partial copy modes are different masking modes in the time domain.

EFFECT: technical result is improved error concealment.

55 cl, 11 dwg, 1 tbl