METHOD AND DEVICE TO GENERATE STEREO SIGNAL WITH IMPROVED PERCEPTION PROPERTY Russian patent published in 2012 - IPC H04S1/00 H04S7/00 

FIELD: information technologies.

SUBSTANCE: audio processor (2) generates a stereo signal (4; 50) with enhanced perceptual properties using a central signal (6a) and a side signal (6b). The central signal (6a) represents a sum, and the side signal (6b) is a difference of the initial left and right channels (40). The audio processor includes a decorrelator (8) to generate a decorrelated representation of a component of the central signal (82) and/or a decorrelated representation of a component of the side signal (84), a combiner of a signal (10; 46) to generate an optimised side signal (14; 90) by combination of the representation (70) of the side signal with the decorrelated representation of the side signal (84) and with the decorrelated representation of the central signal component (82) or with the central signal components and the decorrelated representation of the side signal component (84), and a central side step-up mixer (12; 48), designed to generate a stereo signal with enhanced perceptual properties with application of the central signal representation and optimised side signal.

EFFECT: improved quality of sound reproduction.

20 cl, 7 dwg