发明申请
- 专利标题: Method for representing multi-channel audio signals
- 专利标题(中): 表示多声道音频信号的方法
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申请号: US11549963申请日: 2006-10-16
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公开(公告)号: US20070258607A1公开(公告)日: 2007-11-08
- 发明人: Heiko Purnhagen , Lars Villemoes , Jonas Engdegard , Jonas Roeden , Kristofer Kjoerling
- 申请人: Heiko Purnhagen , Lars Villemoes , Jonas Engdegard , Jonas Roeden , Kristofer Kjoerling
- 优先权: SE0400998-1 20040416
- 主分类号: H04R5/02
- IPC分类号: H04R5/02
摘要:
A multi-channel input signal having at least three original channels is represented by a parameter representation of the multi-channel signal. A first balance parameter, a first coherence parameter, or a first inter-channel time difference between a first channel pair and a second balance parameter, or a second coherence parameter, or a second inter-channel time difference parameter between a second channel pair are calculated. This set of parameters is the parameter representation of the original signals. The first channel pair has two channels, which are different from two channels of a second channel pair. Furthermore, each channel of the two channel pairs is one of the original channels, or a weighted combination of the original channels, and the first channel pair and the second channel pair include information on the three original channels. For multi-channel reconstruction purposes, the parameters are used in addition to down-mixing information to generate a selectable number of output channels in a scalable fashion.
公开/授权文献
- US07986789B2 Method for representing multi-channel audio signals 公开/授权日:2011-07-26