发明名称 |
Speech coding apparatus and speech decoding apparatus |
摘要 |
First codebook 61 and second codebook 62 respectively have two subcodebooks, and in respective codebooks, addition sections 66 and 67 obtain respective excitation vectors by adding sub-excitation vectors fetched from respective two subcodebooks. Addition section 68 obtains an excitation sample by adding those excitation vectors. According to the aforementioned constitution, it is possible to store sub-excitation vectors with different characteristics in respective sub-codebooks. Therefore, it is possible to correspond to input signals with various characteristics, and achieve excellent sound qualities at the time of decoding.
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申请公布号 |
US7110943(B1) |
申请公布日期 |
2006.09.19 |
申请号 |
US20000462493 |
申请日期 |
2000.01.21 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
MORII TOSHIYUKI;YASUNAGA KAZUTOSHI |
分类号 |
G10L19/12;G10L19/00;G10L19/04;H03M7/30 |
主分类号 |
G10L19/12 |
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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