AUDIO ENCODERS, AUDIO DECODERS, SYSTEMS, METHODS AND COMPUTER PROGRAMS USING INCREASED TIME RESOLUTION IN TIME NEIGHBORHOOD OF APPEARANCES OR DISAPPEARANCES OF FRICATIVE CONSONANTS AND AFFRICATES Russian patent published in 2018 - IPC G10L19/25 G10L21/38 G10L19/24 

FIELD: data processing.

SUBSTANCE: invention relates to means for audio encoding and audio decoding. Audio encoder for providing encoded audio information basing on the input audio information is configured able to adjust the time resolution used by the bandwidth extension data providing unit, so that the bandwidth extension information is provided with an increased time resolution for at least a predetermined period of time before the detection of a fricative consonant or an affricate appearance, and for a predetermined period of time after the detection of a fricative consonant or an affricate appearance. In addition, or alternatively, the bandwidth extension information is provided with an increased time resolution in response to detecting the disappearance of a fricative consonant or an affricate.

EFFECT: technical result is to improve the sound quality by extending the bandwidth.

22 cl, 13 dwg