发明名称 |
Multimode speech coding apparatus and decoding apparatus |
摘要 |
Square sum calculator 603 calculates a square sum of evolution in smoothed quantized LSP parameter for each order. A first dynamic parameter is thereby obtained. Square sum calculator 605 calculates a square sum using a square value of each order. The square sum is a second dynamic parameter. Maximum value calculator 606 selects a maximum value from among square values for each order. The maximum value is a third dynamic parameter. The first to third dynamic parameters are output to mode determiner 607 , which determines a speech mode by judging the parameters with respective thresholds to output mode information.
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申请公布号 |
US7167828(B2) |
申请公布日期 |
2007.01.23 |
申请号 |
US20010914916 |
申请日期 |
2001.09.06 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
EHARA HIROYUKI |
分类号 |
G10L19/12;G10L19/06;G10L19/07;G10L19/14;G10L19/18 |
主分类号 |
G10L19/12 |
代理机构 |
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代理人 |
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地址 |
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