发明公开
EP2380167A1 APPARATUS, METHOD AND COMPUTER PROGRAM FOR UPMIXING A DOWNMIX AUDIO SIGNAL
有权
设备，方法和计算机程序UP MIX的缩混音频信号
- 专利标题： APPARATUS, METHOD AND COMPUTER PROGRAM FOR UPMIXING A DOWNMIX AUDIO SIGNAL
- 专利标题（中）： 设备，方法和计算机程序UP MIX的缩混音频信号
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申请号： EP10701119.9申请日： 2010-01-12
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公开(公告)号： EP2380167A1公开(公告)日： 2011-10-26
- 发明人: NEUSINGER, Matthias , ROBILLIARD, Julien , HILPERT, Johannes
- 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： Burger, Markus
- 优先权： US147815P 20090128; EP09007086 20090527
- 国际公布： WO2010086216 20100805
- 主分类号： G10L19/00
- IPC分类号： G10L19/00 ; H04B1/66
摘要：
An apparatus for upmixing a downmix audio signal describing one or more downmix audio channels into an upmixed audio signal describing a plurality of upmixed audio channels comprises an upmixer configured to apply temporally variable upmixing parameters to upmix the downmix audio signal in order to obtain the upmixed audio signal. The apparatus also comprises a parameter interpolator, wherein the parameter interpolator is configured to obtain one or more temporally interpolated upmix parameters to be used by the upmixer on the basis of a first complex-valued upmix parameter and a subsequent second complex-valued upmix parameter. The parameter interpolator is configured to separately interpolate between a magnitude value of the first complex-valued upmix parameter and a magnitude value of the second complex-valued upmix parameter, and between a phase value of the first complex-valued upmix parameter and a phase value of the second complex-valued upmix parameter, to obtain the one or more temporally interpolated upmix parameters. A respective method can be implemented, for example, as a computer program.
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