发明名称 |
Short-term enhancement in CELP speech coding |
摘要 |
A speech-coding device includes a fixed codebook, an adaptive codebook, a short-term enhancement circuit, and a summing circuit. The short-term enhancement circuit connects an output of the fixed codebook to a summing circuit. The summing circuit adds an adaptive codebook contribution to a fixed codebook contribution. The short-term enhancement circuit can also be connected to a synthesis filter to emphasize the spectral formants in an encoder and a decoder.
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申请公布号 |
US6678651(B2) |
申请公布日期 |
2004.01.13 |
申请号 |
US20010771293 |
申请日期 |
2001.01.25 |
申请人 |
MINDSPEED TECHNOLOGIES, INC. |
发明人 |
GAO YANG |
分类号 |
C07K16/12;G01N33/569;G10L19/12;G10L19/14;G10L21/02;(IPC1-7):G10L19/14;G10L19/04;G10L13/02 |
主分类号 |
C07K16/12 |
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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