FIELD: data processing.
SUBSTANCE: invention relates to audio encoding and decoding devices. An attenuation coefficient is derived based on characteristics of a decoded representation of a properly decoded audio frame preceding a lost audio frame. Performing attenuation using the attenuation coefficient. Calculating the ratio between the energy at the decoded representation end portion of the properly decoded audio frame preceding the lost audio frame, or at the end portion of the scaled version of the decoded representation of the properly decoded audio frame preceding the lost audio frame, and full energy in the decoded representation of the properly decoded audio frame preceding the lost audio frame, or in a scaled version of the decoded representation of the properly decoded audio frame preceding the lost audio frame to obtain an attenuation coefficient.
EFFECT: increased efficiency of audio coding.
26 cl, 26 dwg
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