DEVICE AND METHOD FOR DECODING CODED AUDIO WITH FILTER FOR SEPARATING AROUND TRANSITION FREQUENCY Russian patent published in 2018 - IPC G10L21/388 G10L19/02 G10L19/26 

FIELD: physics.

SUBSTANCE: device for decoding an encoded audio signal containing the encoded base signal, contains: a base decoder for decoding the coded reference signal to obtain the decoded primary signal; a module for generation of fragments for the formation of one or more spectral fragments having frequencies not included in the decoded reference signal, using the spectral part of the decoded reference signal; and a separation filter for the spectral filtration for separating the decoded reference signal and the first frequency of the fragment, with the frequencies going from the interval filling frequency of the signal absence to the upper boundary frequency, or for the spectral filtration for separating the first frequency part and the second frequency part.

EFFECT: providing the possibility of encoding audio signals over a wide range of bit rates.

15 cl, 35 dwg