发明名称 |
Speech coding apparatus, speech decoding apparatus, speech coding and decoding method and a phase amplitude characteristic extracting apparatus for carrying out the method |
摘要 |
A speech coding and decoding apparatus for improving the quality of synthesized speech. A coding portion includes a filter for adding a short-term phase amplitude characteristic to an excitation signal, and a coding circuit for quantizing and coding a phase amplitude characteristic. A decoding portion includes a decoding circuit for decoding the coded phase amplitude characteristic, and a filter for adding the same phase amplitude characteristic as that in the coding portion. Thus, it is possible to synthesize high-quality speech with good reproducibility of the phase amplitude characteristic of an excitation signal.
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申请公布号 |
US5724480(A) |
申请公布日期 |
1998.03.03 |
申请号 |
US19950548448 |
申请日期 |
1995.10.26 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
YAMAURA, TADASHI |
分类号 |
G10L19/08;G10L19/00;G10L19/04;G10L19/06;(IPC1-7):G10L3/02;G10L9/00 |
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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