DEVICE AND METHOD FOR PROCESSING OF DECODED AUDIO SIGNAL IN SPECTRAL BAND

摘要

FIELD: physics, audio.SUBSTANCE: invention relates to audio processing, particularly, to processing of decoded audio signal. Proposed device comprises decoded signal filter to get filtered audio signal. Time-spectrum converter cascade to convert decoded audio signal and filtered audio signal into appropriate spectral patterns. Note here that every spectral pattern features multiple subband signals. It incorporates weighing module to weigh selectively the filtered audio signal by multiplication of subband signals by appropriate weighing factors to get weighted filtered audio signal. Used subtraction module executes subtraction in subbands between weighted filtered audio signal and spectral pattern of decoded audio signal. Spectrum-time converter serves to convert resultant audio signal or signal isolated therefrom in presentation in time band to get a processed decoded audio signal.EFFECT: after-processing with low lag of decoded audio signal.16 cl, 13 dwg