METHOD FOR ENCODING SOUND SOURCE OF PROBABILISTIC CODE BOOK

摘要

A probabilistic codebook (103) correlates a pulse position of a predetermined channel with a pulse position of another channel, searches the pulse position by a predetermined algorithm, and outputs a code consisting of the searched pulse position and the polarity code as a code of probabilistic sound source to a sound source creation section (104). Thus, it is possible to assure such a variation that there is no position where no pulse arises while reducing the number of bits when encoding the pulse of the probabilistic codebook for reducing the bit rate.