发明公开
- 专利标题： CODIEREN UND DECODIEREN VON AUDIOSIGNALEN UNTER VERWENDUNG VON INTENSITY-STEREO UND PRÄDIKTION
- 专利标题（英）： Coding and decoding of audio signals by using intensity stereo and prediction processes
- 专利标题（中）： 编码和解码音频信号，使用强度立体声与预测
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申请号： EP97927117.0申请日： 1997-06-03
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公开(公告)号： EP0910928A1公开(公告)日： 1999-04-28
- 发明人: GBUR, Uwe , DIETZ, Martin , BRANDENBURG, Karlheinz , GERHÄUSER, Heinz , HERRE, Jürgen , QUACKENBUSH, Schuyler
- 申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , AT & T Laboratories/Research , Lucent Technologies
- 申请人地址： Leonrodstrasse 54 80636 München DE
- 专利权人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.,AT & T Laboratories/Research,Lucent Technologies
- 当前专利权人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.,AT & T Laboratories/Research,Lucent Technologies
- 当前专利权人地址： Leonrodstrasse 54 80636 München DE
- 代理机构： Schoppe, Fritz, Dipl.-Ing., et al
- 优先权： DE19961028293 19960712
- 国际公布： WO1998003037 19980122
- 主分类号： G10L19
- IPC分类号： G10L19 ; H04B1 ; H04B14 ; H04S1 ; H04S3
摘要：
When coding and decoding stereophonic spectral values, both the intensity stereo process and a prediction process are used to achieve a high data compression. When an intensity stereo coding is active in a section composed of scaling factor bands (28), prediction for the right channel (R) is deactivated in this area, so that the prediction results are not used to build the coded stereophonic spectral values. The predictor of the right channel (R) is supplied with stereophonic spectral values for this channel which are in turn decoded by an intensity stereo process, so that prediction for the right channel (R) can continue to adapt itself.
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