基本信息:
- 专利标题： VECTOR CODING PROCESS, ESPECIALLY FOR VOICE SIGNALS
- 专利标题（中）：VEKTORCODIERVERFAHREN，尤其是对语音信号
- 申请号：EP94912473.0 申请日：1994-04-20
- 公开(公告)号：EP0697124A1 公开(公告)日：1996-02-21
- 发明人： MÜLLER, Jörg-Martin , WÄCHTER, Bertram
- 申请人： ANT Nachrichtentechnik GmbH
- 申请人地址： Gerberstrasse 33 D-71522 Backnang DE
- 专利权人： ANT Nachrichtentechnik GmbH
- 当前专利权人： IPCOM GMBH & CO. KG, DE
- 当前专利权人地址： IPCOM GMBH & CO. KG, DE
- 优先权： DE19934315313 19930507
- 国际公布： WO1994027285 19941124
- 主分类号： G10L19
- IPC分类号： G10L19 ; H03M7
摘要：
In a vector coding process, especially for voice signals, autocorrelation coefficients are stored in the codebook and when combined with the autocorrelation function of the pulse response of an excitation filter produce the energy of the filtered excitation signal. To further reduce data, only those values that have three autocorrelation coefficients other than 0 are entered in the codebook. The combination patterns that can be formed from these coefficients occur with equal frequency in the codebook. As a result of these measures it is possible to effect a highly disturbance-resistant transmission of coded data with reduced outlays for memory and processing.