发明名称 |
Method and apparatus for producing component of excitation vector |
摘要 |
A random code vector reading section and a random codebook of a conventional CELP type speech coder/decoder are respectively replaced with an oscillator for outputting different vector streams in accordance with values of input seeds, and a seed storage section for storing a plurality of seeds. This makes it unnecessary to store fixed vectors as they are in a fixed codebook (ROM), thereby considerably reducing the memory capacity.
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申请公布号 |
US6453288(B1) |
申请公布日期 |
2002.09.17 |
申请号 |
US19980101186 |
申请日期 |
1998.07.06 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
YASUNAGA KAZUTOSHI;MORII TOSHIYUKI;WATANABE TAISUKE;EHARA HIROYUKI |
分类号 |
G10L19/00;G10L19/04;G10L19/08;G10L19/12;G10L19/135;G10L19/14;G10L21/00;(IPC1-7):G01L19/08 |
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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