DEVICE FOR ENCODING STEREOPHONIC SIGNALS, DEVICE FOR DECODING STEREOPHONIC SIGNALS AND METHODS REALISED BY SAID DEVICES Russian patent published in 2013 - IPC G10L19/08 

FIELD: information technology.

SUBSTANCE: device for encoding stereophonic signals disclosed in the present invention employs a configuration, having: a sum and difference calculator which generates a monaural signal related to a sum of a left and a right signal forming a stereo signal, and generates a side signal related to the difference between the left and right channel signals; a mode information generator which generates mode information per layer indicating a coding mode of one of monaural coding and stereophonic coding; and first to N-th layer coders which perform monaural coding in an i-th layer (i=1, 2 …, N, where N is an integer equal to or greater than 2) using information related to the monaural signal or performs stereophonic coding in the i-th layer using both the information related to the monaural signal and information related to the side signal, based on the mode information, and provide i-th layer encoded information.

EFFECT: providing scalable coding based on correlation between left and right channel signals and information value and setting layers for performing monaural and stereophonic coding.

13 cl, 20 dwg