发明授权
US07394903B2 Apparatus and method for constructing a multi-channel output signal or for generating a downmix signal
有权
用于构造多通道输出信号或用于产生下混合信号的装置和方法
- 专利标题: Apparatus and method for constructing a multi-channel output signal or for generating a downmix signal
- 专利标题(中): 用于构造多通道输出信号或用于产生下混合信号的装置和方法
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申请号: US10762100申请日: 2004-01-20
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公开(公告)号: US07394903B2公开(公告)日: 2008-07-01
- 发明人: Jürgen Herre , Christof Faller
- 申请人: Jürgen Herre , Christof Faller
- 申请人地址: DE Munich
- 专利权人: Fraunhofer-Gesellschaft zur Forderung der Angewandten Forschung E.V.
- 当前专利权人: Fraunhofer-Gesellschaft zur Forderung der Angewandten Forschung E.V.
- 当前专利权人地址: DE Munich
- 代理商 Laurence A. Greenberg; Werner H. Stemer; Ralph E. Locher
- 主分类号: H04R5/00
- IPC分类号: H04R5/00
摘要:
The apparatus for constructing a multi-channel output signal using an input signal and parametric side information, the input signal including the first input channel and the second input channel derived from an original multi-channel signal, and the parametric side information describing interrelations between channels of the multi-channel original signal uses base channels for synthesizing first and second output channels on one side of an assumed listener position, which are different from each other. The base channels are different from each other because of a coherence measure. Coherence between the base channels (for example the left and the left surround reconstructed channel) is reduced by calculating a base channel for one of those channels by a combination of the input channels, the combination being determined by the coherence measure. Thus, a high subjective quality of the reconstruction can be obtained because of an approximated original front/back coherence.