发明授权
EP1986321B1 Apparatus for assessing an energy of a signal having subband signals and corresponding method
有权
用于将信号具有的子带信号的能量的评估的装置以及相关联的方法
- 专利标题： Apparatus for assessing an energy of a signal having subband signals and corresponding method
- 专利标题（中）： 用于将信号具有的子带信号的能量的评估的装置以及相关联的方法
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申请号： EP08011168.5申请日： 2003-08-27
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公开(公告)号： EP1986321B1公开(公告)日： 2010-10-20
- 发明人: Kjoerling, Kristofer , Villemoes, Lars
- 申请人： Dolby International AB
- 申请人地址： Atlas Complex, Africa Building Hoogoorddreef 9 1101 BA Amsterdam NL
- 专利权人： Dolby International AB
- 当前专利权人： Dolby International AB
- 当前专利权人地址： Atlas Complex, Africa Building Hoogoorddreef 9 1101 BA Amsterdam NL
- 代理机构： Zinkler, Franz
- 优先权： SE0202770 20020918
- 主分类号： H03H17/02
- IPC分类号： H03H17/02
摘要：
The present invention proposes a new method for improving the performance of a real-valued filterbank based spectral envelope adjuster. By adaptively locking the gain values for adjacent channels dependent on the sign of the channels, as defined in the application, reduced aliasing is achieved. Furthermore, the grouping of the channels during gain-calculation, gives an improved energy estimate of the real valued subband signals in the filterbank.
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