发明名称 |
Vector quantization codebook generation method |
摘要 |
<p>In a CELP type speech coder, the excitation is quantized by vectors from a random codebook. The random codebook is made of a fixed waveform storage section (181), followed by a vector rearranging unit (182). The rearranging section (182) shifts the vectors to positions determined to minimize the quantization distorsion using a pulse placement methodology of an algebraic coder. The vectors are summed (183) to generate the excitation code vector.</p> |
申请公布号 |
EP1071081(B1) |
申请公布日期 |
2002.05.08 |
申请号 |
EP20000121466 |
申请日期 |
1997.11.06 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
YASUNAGA, KAZUTOSHI;WATANABE, TAISUKE;MORII, TOSHIYUKI;EHARA, HIROYUKI |
分类号 |
G10L19/00;G10L19/04;G10L19/08;G10L19/12;G10L19/14;G10L21/00;(IPC1-7):G10L19/12 |
主分类号 |
G10L19/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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