POLARIZED MULTIPLE VECTOR QUANTIZATION METHOD, DEVICE, PROGRAM AND RECORDING MEDIUM THEREFOR

摘要

The value of a cross term cross(j, m) of a pair (x_j, y_m) of representative output vectors selected from a code book X storage unit (31) and a code book Y storage unit (32), respectively, is previously calculated and stored in a cross table storage unit (6). The cross term is determined independently of an input vector u of the definitional equation of a second distance scale d(j, m). A second distance scale calculation unit (5) finds the value of the cross term cross(j, m) needed to find the second distance scale d(j, m) with reference to the cross table storage unit (6).