PACKET LOSS MASKING FOR DirAC-BASED SPATIAL AUDIO CODING Russian patent published in 2023 - IPC G10L19/05 

FIELD: computer engineering.

SUBSTANCE: processing audio data. Replacing the second arrival direction information of the second set with replacement arrival direction information extracted from the first arrival direction information if at least the second arrival direction information or part of the second arrival direction information is lost or damaged; wherein the replacement stage contains a stage at which the replacement information of the direction of arrival is blurred by introducing random noise; and/or wherein the replacement step comprises introducing random noise into the first arrival direction information to obtain replacement arrival direction information; wherein the introduction step is performed if the first or second diffuseness information (ψ1,ψ 2) indicates high diffuseness; and/or if the first or second diffuseness information (ψ1,ψ2) is above a specified threshold value for diffuseness information.

EFFECT: eliminating artifacts in the output sound when processing audio data by masking losses with DirAC spatial audio processing technology.

19 cl, 10 dwg