PROCESSOR FOR GENERATING PREDICTION SPECTRUM BASED ON LONG-TERM PREDICTION AND/OR HARMONIC POST-FILTERING Russian patent published in 2024 - IPC G10L19/09 G10L19/18 

FIELD: computer engineering.

SUBSTANCE: invention relates to computer engineering for processing audio data. Technical result is achieved by steps of: receiving samples (y_s) extracted from the encoded audio signal frame using LTP buffer (1010); dividing a time interval associated with a subsequent frame of the encoded audio signal, subsequent relative to the frame, into subintervals depending on the encoded pitch parameter; extracting subinterval parameters from the encoded pitch parameter depending on the position of the subintervals in the time interval associated with a subsequent frame of the encoded audio signal; generating a prediction signal from LTP buffer (1010) depending on the subinterval parameters; and generating a prediction spectrum based on the prediction signal.

EFFECT: high quality of harmonic coding of signals.

29 cl, 29 dwg