DEVICE AND METHOD FOR CODING OR DECODING SOUND SIGNAL WITH INTELLIGENT FILLING OF INTERVALS IN SPECTRAL AREA Russian patent published in 2017 - IPC G10L19/02 G10L21/38 

FIELD: physics.

SUBSTANCE: device for decoding the encoded audio signal comprises an audio decoder in the spectral domain to form the first decoded representation of the first set of the first spectral portions. The decoded representation has the first spectral resolution; a parametric decoder for generating the second decoded representation of the second set of the second spectral portions having the second spectral resolution lower than the first spectral resolution; a frequency re-forming unit for re-forming each composed second spectral portion having the first spectral resolution using the first spectral portion and the spectral envelope information for the second spectral portion; and a time-spectral converter for converting the first decoded representation and the reconstructed second spectral portion to the temporal representation.

EFFECT: increasing the efficiency of encoding and decoding video data.

26 cl, 41 dwg