发明名称 |
Voice encoder, voice decoder, voice encoder/decoder, voice encoding method, voice decoding method and voice encoding/decoding method |
摘要 |
When an input speech (5) is separated into a spectrum-envelope information and an excitation signal, and the excitation signal is encoded at each frame based on a plurality of excitation signal positions and a plurality of excitation signal gains, the encoding characteristic is improved according to the present invention. In an excitation signal coding unit (11) for encoding the excitation signal based on the plurality of excitation signal positions and the plurality of excitation signal gains, a temporary gain calculating unit (40) for calculating a temporary gain for each excitation signal position candidate is provided. A pulse position search unit (41) determines the plurality of excitation signal positions by using the temporary gains. A gain coding unit (12) encodes the excitation signal gain based on the determined excitation signal position. <IMAGE> |
申请公布号 |
AU4319697(A) |
申请公布日期 |
1998.09.29 |
申请号 |
AU19970043196 |
申请日期 |
1997.09.24 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
HIROHISA TASAKI |
分类号 |
G10L19/08;G10L19/10 |
主分类号 |
G10L19/08 |
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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