发明名称 |
DIGITAL CODING METHOD AND DEVICE FOR CARRYING OUT THE METHOD |
摘要 |
This coder dispatches the bits resulting from the coding operation of a speech signal into a format for transmission at a rate chosen from a plurality of predetermined transmission rates. More specifically, the contents of at least part of the speech signal frequency bandwidth is split into several sub-bands. Said sub-bands are regrouped into sub-groups, each of said sub-groups corresponding to at least one of said possible transmission rates, i.e. to at least one sub-group coding bit rate. The signal samples belonging to each sub-group are recoded through a dynamical allocation of requantizing steps between the sub-bands. The obtained bits resulting from the recoding are dispatched into a multirate frame according to the sub-group which they belong to. |
申请公布号 |
DE3270212(D1) |
申请公布日期 |
1986.05.07 |
申请号 |
DE19823270212 |
申请日期 |
1982.04.30 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION;COMPAGNIE IBM FRANCE |
发明人 |
CALLENS, PAUL;GALAND, CLAUDE |
分类号 |
H03M7/30;H04B1/66;H04B14/04;H04J3/00;(IPC1-7):H04B1/66 |
主分类号 |
H03M7/30 |
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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