AUDIO DECODER, DEVICE FOR DETERMINING SET OF VALUES SETTING FILTER CHARACTERISTICS, METHODS FOR PROVIDING DECODED AUDIO REPRESENTATION, METHODS FOR DETERMINING SET OF VALUES SETTING FILTER CHARACTERISTICS, AND COMPUTER SOFTWARE Russian patent published in 2023 - IPC G10L19/26 G10L21/232 G10L25/30 

FIELD: computer engineering.

SUBSTANCE: processing audio data. The technical result is achieved by an audio decoder to provide a decoded audio presentation based on the encoded audio presentation, which contains a filter to provide an improved audio presentation of the decoded audio presentation. The filter is configured to obtain a plurality of scaling values that are associated with different frequency bins or frequency bands based on the spectral values of the decoded audio representation that are associated with different frequency bins or frequency bands, and the filter is configured to scale the spectral values of the decoded representation audio signals or a pre-processed version of them using scaling values to obtain an enhanced audio presentation. A device is also described for determining a set of values specifying filter characteristics for providing enhanced audio presentation based on the decoded audio presentation.

EFFECT: improved quality of audio data reproduction while maintaining the bit rate.

44 cl, 14 dwg