发明名称 |
Vector encoding method and encoder/decoder using the method |
摘要 |
Representative vectors z1i and z2j are selected from codebooks CB1 and CB1, respetively, and multiplied by weighting coefficient vectors w1 and w2 of the same number of dimensions as those of the representative vectors by multipliers 21 and 22, whereby weighted representative vectors z1iw1 and z2jw2 are generated. These weighted representative vectors are vector combined by a combining part 3 into a combined vector yij, and a combination of the representative vectors is seleced by a control part in such a manner as to minimize the distance between the combined vector yij and an input vector X. The weighting coefficient vectors w1 and w2 each have a maximum component in a different dimension and are selected so that the sum of diagonal matrixes W1 and W2 using components of the weighting coefficient vectors as their diagonal elements becomes a constant multiple of the unit matrix. <IMAGE> |
申请公布号 |
AU3578295(A) |
申请公布日期 |
1996.05.02 |
申请号 |
AU19950035782 |
申请日期 |
1995.09.29 |
申请人 |
NIPPON TELEGRAPH AND TELEPHONE CORPORATION |
发明人 |
AKITOSHI KATAOKA;JOTARO IKEDO |
分类号 |
G10L15/02;G06T9/00;G10L19/00;G10L19/12;H03M7/02;H03M7/30 |
主分类号 |
G10L15/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|