发明名称 |
SPEECH SIGNAL CODING METHOD AND APPARATUS |
摘要 |
A voice signal coding method is provided for processing the residual base-band signal provided by a Voice Excited Predictive (VEPC) Coder. The residual signal is split over several sub-bands and the contents of each sub-band is dually coded by using a process including a simultaneous direct BCPCM and differential APC coding with dynamic assignment of the quantizing bits according to the relative sub-band contents, which simultaneous coding is followed by a dynamic choice of the sub-band coded output providing the lowest coding error. |
申请公布号 |
DE3276651(D1) |
申请公布日期 |
1987.07.30 |
申请号 |
DE19823276651 |
申请日期 |
1982.11.26 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION;COMPAGNIE IBM FRANCE |
发明人 |
GALAND, CLAUDE;DAULASIM, KHAMPHUC |
分类号 |
H03M1/12;G06T9/00;H03M7/30;H04B1/66;H04B14/04;(IPC1-7):H04B1/66 |
主分类号 |
H03M1/12 |
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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