FIELD: computer equipment for encoding audio data.
SUBSTANCE: technical result is achieved by determining the distance between the potential code vector and the ordered vector of parameters by forming the first and second distance components based on the first value of the scaling factor, wherein the first and second distance components are associated with the distance between the potential code vector and the ordered parameter vector, correcting the sign of the first distance component, when the potential code vector does not pass the parity constraint check, and determining the distance between the at least one potential code vector and the ordered parameter vector based on the first and second distance components; determining the leading class, associated with potential code vector, which forms the least associated distance; and sorting the leading class by descending ordering based on the absolute values of the components of said at least one parameter vector.
EFFECT: reduced complexity of encoding by estimating distortion of quantization in transposed vector space.
15 cl, 6 dwg
