三带自适应提升双正交滤波器组
Three-band Adaptive Biorthogonal Filterbanks via Lifting
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摘要: 该文研究了利用三带提升方法设计三带自适应双正交的滤波器组。在设计中，用子带编码增益作为设计准则，从任意一个滤波器组(标准正交或双正交)开始。通过有序自适应提升方法来设计三带双正交滤波器组。最后。给出例子说明。当选择一个合适初始滤波器组时，子带码增益可以得到较大提高。
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关键词:
- 双正交滤波器组;子带码增益;自适应提升
Abstract: Three-channel adaptive biorthogonal filterbanks via lifting scheme aro investi-gated. Using the subband coding gain as the criterion in design, starting from an arbitrary filterbank (orthonormal or biorthogonal), three-channel biorthogonal filterbanks arc designed by the sequential adaptive lifting scheme. Finally, experimental results show that the sub-band coding gains can be improved when an appropriate initial filterbank is chosen. -
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