Design method and vector quantizer of vector quantizer

摘要

PURPOSE: To provide the method minimizing average distortion regardless of signal distribution in the design of a code book. CONSTITUTION: A code word is 'copied' or 'Lost' based ON the 'principle of equal distorsion'. For example and when each code word is selected at a closest vector, a distortion d (x, y) is integrated (103), and when an input data number (t) reaches a number T (101), an adaptive degree is calculated (105) in response to an accumulated distortion g1 (=SIGMAd (x, yc))A copy of the relevant code ward is generated in terms of probability in response to the adaptive degree (106) and a new code word group is obtained by adding a random vector to each copy respectively (107) and the code book is revised by the code word group (108).