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发明申请
US20110054914A1 Method for Reduction of Aliasing Introduced by Spectral Envelope Adjustment in Real-Valued Filterbanks 有权
减少实数滤波器中频谱信号调整引入的混叠的方法

  • 专利标题： Method for Reduction of Aliasing Introduced by Spectral Envelope Adjustment in Real-Valued Filterbanks
  • 专利标题（中）： 减少实数滤波器中频谱信号调整引入的混叠的方法
  • 申请号： US12872482
    申请日： 2010-08-31
  • 公开(公告)号： US20110054914A1
    公开(公告)日： 2011-03-03
  • 发明人: Kristofer Kjoerling , Lars Villemoes
  • 申请人： Kristofer Kjoerling , Lars Villemoes
  • 优先权： SE0202770-4 20020918
  • 主分类号： G10L19/00
  • IPC分类号： G10L19/00
Method for Reduction of Aliasing Introduced by Spectral Envelope Adjustment in Real-Valued Filterbanks
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.
摘要（中）：

本发明提出了一种用于提高基于实数滤波器组的频谱包络调节器的性能的新方法。 通过自适应地锁定取决于通道的符号的相邻通道的增益值，如应用中定义的那样，实现了减少的混叠。 此外，增益计算期间信道的分组给出了滤波器组中实值子带信号的改进的能量估计。

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