DEVICE AND METHOD FOR POST-PROCESSING OF AUDIO SIGNAL USING FORECAST-BASED PROFILING Russian patent published in 2020 - IPC G10L19/03 G10L19/26 G10L19/25 

FIELD: physics.

SUBSTANCE: invention relates to means of post-processing of audio signal. Audio signal is converted into a spectral representation containing a sequence of spectral frames. Predicted filter data for prediction by frequency within the spectral frame are calculated. In response to the prediction filter data, the spectral frame is profiled to improve the quality of the burst region within the spectral frame. Converting a sequence of spectral frames containing a profiled spectral frame into a time domain. Autocorrelation signal is calculated. Window processing of autocorrelation signal is performed by means of window having first time constant to obtain first result signal. First prediction filter data from the first result signal are calculated. Autocorrelation signal is processed by window with the second time constant to obtain the second resultant signal. Second predicted filter data are calculated from the second resultant signal.

EFFECT: technical result is higher efficiency of post-processing sound bounced.

20 cl, 62 dwg