发明名称 |
A circuit,system,semiconductor chip and mobile telephone for effecting an algebraic codebook search on a signal for transcoding speech |
摘要 |
The present invention relates to a circuit for encoding a speech signal to a digital signal for use in a mobile telephone. Hitherto such encoding has involved a large number of multiply accumulate operations in the algebraic codebook search. The present invention comprises replacing one of more multiply accumulate units with a shift operation. Thus, the present invention is directed to a shift accumulate unit to perform on said speech signal an algebraic codebook search. Significant power efficiencies can be obtained by reducing the reliance upon so many multiply accumulate units. |
申请公布号 |
GB0407615(D0) |
申请公布日期 |
2004.05.05 |
申请号 |
GB20040007615 |
申请日期 |
2004.04.02 |
申请人 |
SEIKO EPSON CORPORATION |
发明人 |
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分类号 |
G10L13/04;G10L19/00;G10L19/10;G10L19/12;G10L19/14 |
主分类号 |
G10L13/04 |
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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