发明申请
US20110317842A1 APPARATUS, METHOD AND COMPUTER PROGRAM FOR UPMIXING A DOWNMIX AUDIO SIGNAL
有权
装置,方法和计算机程序,用于提升下载音频信号
- 专利标题: APPARATUS, METHOD AND COMPUTER PROGRAM FOR UPMIXING A DOWNMIX AUDIO SIGNAL
- 专利标题(中): 装置,方法和计算机程序,用于提升下载音频信号
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申请号: US13189621申请日: 2011-07-25
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公开(公告)号: US20110317842A1公开(公告)日: 2011-12-29
- 发明人: Matthias NEUSINGER , Julien ROBILLIARD , Johannes HILPERT
- 申请人: Matthias NEUSINGER , Julien ROBILLIARD , Johannes HILPERT
- 申请人地址: DE Munich
- 专利权人: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
- 当前专利权人: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
- 当前专利权人地址: DE Munich
- 优先权: EP09007086.3 20090527
- 主分类号: H04R5/00
- IPC分类号: H04R5/00
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 includes 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 includes 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.