METHOD, DEVICE, CODING DEVICE, DECODING DEVICE AND AUDIO SYSTEM Russian patent published in 2010 - IPC G10L19/02 

FIELD: information technologies.

SUBSTANCE: method for processing of stereo signal includes stages, when N-channel audio signal is coded into stereo signal (L₀, R₀) and spatial parameters (w₁, w_r), stereo signal is processed with application of spatial parameters to generate processed stereo signal (L_0w, R_0w) - matrix of processed stereo signal may be described as matrix of stereo signal multiplied by filter matrix (H), elements of which are filter functions (H₁, H₂, H₃, H₄) operating with spatial parameters (w₁, w_r) and constant (a). Filter functions do not depend on time and selected so that matrix is reversible.

EFFECT: improved down mixing regarding quality of perception or its spatial properties.

20 cl, 4 dwg