| 用提升方法设计三带自适应双正交滤波器组 |
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| 引用本文： | 徐小平,王峰,刘广钧.用提升方法设计三带自适应双正交滤波器组[J].数学的实践与认识,2009,39(3). |
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| 作者姓名： | 徐小平 王峰 刘广钧 |
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| 作者单位： | 1. 西安理工大学理学院,数学系,西安,710048
2. 西安交通大学理学院,数学系,西安,710049 |
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| 基金项目： | 西安理工大学科技创新计划 |
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| 摘 要： | 自适应滤波器组设计是多速率滤波器组理论和应用的一个重要方面.由于其频率响应更好地匹配于输入信号的统计特性,这类滤波器组可获得更大的子带编码增益.研究了用提升方法设计三带自适应双正交滤波器组,给出了设计算法.最后,给出例子,说明其子带编码增益明显提高.
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| 关 键 词： | 双正交滤波器组 子带编码增益 提升方法 |
Design of Three-band Adaptive Biorthogonal Filterbanks by Lifting Scheme |
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| XU Xiao-ping,WANG Feng,LIU Guang-jun.Design of Three-band Adaptive Biorthogonal Filterbanks by Lifting Scheme[J].Mathematics in Practice and Theory,2009,39(3). |
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| Authors: | XU Xiao-ping WANG Feng LIU Guang-jun |
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| Abstract: | Signal-adapted filterbanks are an important subject in the theory and applications of the multirate filterbanks.Because the frequency responses match the statistics of the underlying signals very well,these filterbanks achieve the larger subband coding gains.In this paper,we investigate the design of three-band adaptive biorthogonal filterbanks by lifting scheme,and give the design algorithm.Finally,experimental results show that the subband coding gains can be markedly improved. |
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| Keywords: | biorthogonal filterbank subband coding gain adaptive lifting scheme |
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