发明名称 |
Voice coding process and device for implementing said process |
摘要 |
The voice signal is analyzed to derive therefrom a low frequency base band signal, linear prediction coefficients and HF descriptors. Said HF descriptors include HF energy indications as well as indications relative to the phase shift between the low frequency and the high frequency band. Said HF descriptors are used during the voice synthesis operation to provide an inphase HF bandwidth component to be added to the phase band prior to be used for driving a linear prediction synthesis filter tuned using said linear prediction parameters. |
申请公布号 |
US5001758(A) |
申请公布日期 |
1991.03.19 |
申请号 |
US19870035806 |
申请日期 |
1987.04.08 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
GALAND, CLAUDE;MENEZ, JEAN |
分类号 |
H04B14/04;G10L19/00;G10L19/06;H03M7/30 |
主分类号 |
H04B14/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|