| 摘要 |
Drive sound source coding means, decoding means has a plurality of algebraic sound source coding means, decoding means having sound source position tables different in distribution lean of sound source position candidates in a frame, each algebraic sound source coding means, decoding means for referencing spectrum envelope information and coding the sound source of an input voice based on a sound source position selected from among the sound source position candidates in the sound source position table and a polarity and selection means for selecting the algebraic sound source coding means, decoding means with the smallest coding distortion from among the plurality of algebraic sound source coding means, decoding means and outputting code representing the drive sound source position output by the selected algebraic sound source coding means, and polarity.
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