发明名称 |
Improvement to vector quantizing coder. |
摘要 |
A signal vector quantizing coder (CELP) is provided with an adaptive codebook originally loaded with preselected codewords. The codebook is split into a fixed contents portion and a fixed length adaptive contents portion. During coding operations, the codewords dynamically selected for coding the coder input signal are shifted into the fixed length adaptive codebook section for codebook contents updating purposes. |
申请公布号 |
EP0364647(B1) |
申请公布日期 |
1995.02.22 |
申请号 |
EP19880480060 |
申请日期 |
1988.10.19 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
GALAND, CLAUDE;MENEZ, JEAN;ROSSO, MICHELE |
分类号 |
H03M7/30;G06T9/00;G10L19/06;(IPC1-7):G10L9/14 |
主分类号 |
H03M7/30 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|