发明公开
EP1990799A1 Audio encoder, audio decoder and audio processor having a dynamically variable warping characteristic
审中-公开
音频编码器，音频解码器和具有动态可变翘曲特性的音频处理器
- 专利标题： Audio encoder, audio decoder and audio processor having a dynamically variable warping characteristic
- 专利标题（中）： 音频编码器，音频解码器和具有动态可变翘曲特性的音频处理器
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申请号： EP08014723.4申请日： 2006-06-30
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公开(公告)号： EP1990799A1公开(公告)日： 2008-11-12
- 发明人: Wabnik, Stefan , Schuller, Gerald , Herre, Jürgen , Grill, Bernhard , Multrus, Markus , Bayer, Stefan , Krämer, Ulrich , Hirschfeld, Jens
- 申请人： Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V.
- 申请人地址： Hansastrasse 27c 80686 München DE
- 专利权人： Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V.
- 当前专利权人： Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V.
- 当前专利权人地址： Hansastrasse 27c 80686 München DE
- 代理机构： Zinkler, Franz
- 主分类号： G10L19/00
- IPC分类号： G10L19/00
摘要：
An audio encoder, an audio decoder or an audio processor includes a filter for generating a filtered audio signal, the filter having a variable warping characteristic, the characteristic being controllable in response to a time-varying control signal, the control signal indicating a small or no warping characteristic or a comparatively high warping characteristic. Furthermore, a controller is connected for providing the time-varying control signal, which depends on the audio signal. The filtered audio signal can be introduced to an encoding processor having different encoding algorithms, one of which is a coding algorithm adapted to a specific signal pattern. Alternatively, the filter is a post-filter receiving a decoded audio signal.
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