ENCODING AND DECODING PARAMETERS Russian patent published in 2023 - IPC G10L19/08 

FIELD: computer engineering.

SUBSTANCE: processing audio data. The technical result is achieved due to the fact that the target version (CyR) of the covariance information (Cy) of the original signal is restored based on the estimated version () of the original covariance information (Cy), while the estimated version () of the original covariance information (Cy) is reported to the mentioned number of synthesis channels, and the estimated version () of the original covariance information is obtained from the covariance information (Cx) of the downmix signal, with the estimated version () of the original covariance information is obtained by applying to the covariance information (Cx) of the downmix signal an estimation rule (Q), which is or is associated with a prototype rule for calculating the prototype signal.

EFFECT: enabling encoding and decoding of audio signal parameters with low bit rates to describe multi-channel content between encoder and decoder without loss of output sound quality.

74 cl, 27 dwg, 2 tbl