DEVICE FOR POST-PROCESSING OF AUDIO SIGNAL USING BURST LOCATION DETECTION Russian patent published in 2020 - IPC G10L19/26 G10L21/224 G10L19/02 G10L19/25 G10L19/03 

FIELD: physics.

SUBSTANCE: invention relates to means of post-processing of audio signal. Audio signal is converted during a time-frequency representation. Place of time surge for splash area using audio signal or time-frequency representation. It is manipulated by time-frequency representation to attenuate or eliminate anticipatory echo in time-frequency representation at location in time before splash place. At that threshold echo threshold values are evaluated with reference to spectral values in time-frequency representation within the limits of anticipatory echo duration, wherein threshold echo threshold values indicate threshold values of amplitude of corresponding spectral values after easing or eliminating anticipatory echo. Pre-empting echo threshold values are determined using a weighting curve having an increasing characteristic from the beginning of the anticipatory echo duration to the splash point. It is manipulated by time-frequency representation to perform profiling of time-frequency representation at the splash point in order to intensify impact of the splash-back part.

EFFECT: technical result consists in improvement of processing efficiency.

15 cl, 61 dwg, 1 tbl