发明名称 |
Speech coding system utilizing a recursive computation technique for improvement in processing speed |
摘要 |
This invention provides a novel speech coding system which recursively executes a filter-applied "Toeplitz characteristic" by causing a drive signal (i.e., an excitation signal) to be converted into a "Toeplitz matrix" when detecting a pitch period in which distortion of the input vector and the vector subsequent to the application of filter-applied computation to the drive signal vector in the pitch forecast called either "closed loop" or "compatible code book" is minimized. The vector quantization method substantially making up the speech coding system of the invention is characteristically used by the system.
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申请公布号 |
USRE36646(E) |
申请公布日期 |
2000.04.04 |
申请号 |
US19950504227 |
申请日期 |
1995.07.19 |
申请人 |
KABUSHIKI KAISHA TOSHIBA |
发明人 |
AKAMINE, MASAMI;OKUDA, YUJI;MISEKI, KIMIO |
分类号 |
G10L19/00;G10L19/08;G10L19/083;G10L19/12;G10L19/14;G10L19/16;(IPC1-7):G10L9/00 |
主分类号 |
G10L19/00 |
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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