发明公开
EP2717261A1 Encoder, decoder and methods for backward compatible multi-resolution spatial-audio-object-coding
审中-公开
编码器，解码器和方法，用于向后兼容的空间音频对象编码多分辨率
- 专利标题： Encoder, decoder and methods for backward compatible multi-resolution spatial-audio-object-coding
- 专利标题（中）： 编码器，解码器和方法，用于向后兼容的空间音频对象编码多分辨率
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申请号： EP13167485.5申请日： 2013-05-13
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公开(公告)号： EP2717261A1公开(公告)日： 2014-04-09
- 发明人: Disch, Sascha , Fuchs, Harald , Paulus, Jouni , Terentiv, Leon , Hellmuth, Oliver , Herre, Jürgen
- 申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. , Friedrich-Alexander-Universität Erlangen-Nürnberg
- 申请人地址： Hansastrasse 27c 80686 München DE
- 专利权人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.,Friedrich-Alexander-Universität Erlangen-Nürnberg
- 当前专利权人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.,Friedrich-Alexander-Universität Erlangen-Nürnberg
- 当前专利权人地址： Hansastrasse 27c 80686 München DE
- 代理机构： Zinkler, Franz
- 优先权： US201261710128P 20121005
- 主分类号： G10L19/008
- IPC分类号： G10L19/008 ; G10L19/02
摘要：
A decoder for generating an un-mixed audio signal comprising a plurality of un-mixed audio channels is provided. Moreover, an encoder and an encoded audio signal is provided. The decoder comprises an un-mixing-information determiner for determining un-mixing information by receiving first parametric side information on the at least one audio object signal and second parametric side information on the at least one audio object signal, wherein the frequency resolution of the second parametric side information is higher than the frequency resolution of the first parametric side information. Moreover, the decoder comprises an un-mix module for applying the un-mixing information on a downmix signal, indicating a downmix of at least one audio object signal, to obtain an un-mixed audio signal comprising the plurality of un-mixed audio channels. The un-mixing-information determiner is configured to determine the un-mixing information by modifying the first parametric information and the second parametric information to obtain modified parametric information, such that the modified parametric information has a frequency resolution which is higher than the first frequency resolution.
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