| 摘要 |
<p>In a vector quantization apparatus for expressing a target vector by using a code vector designated by an index, an error evaluating section (2310) performs error evaluation for a code vector without considering a code error of the index and error evaluation with considering the code error, a first selecting section (2320) selects a small number of indexes from a larger number of indexes on the basis of an evaluation result without considering the code error, and a second selecting section (2325) selects, on the basis of an evaluation result with considering the code error, an index used to express the target vector from a small number of indexes selected by the first selecting section. <IMAGE></p> |
