摘要
通过分析最大抽取均匀滤波器组中产生的混迭分量 ,提出了适当设定综合滤波器与分析滤波器的关系以使混叠相互抵消的方法 .理论分析表明 ,在频率交界点可将混迭完全消除 ,如果相邻滤波器的频率特性对称性较好可使总混迭很小 .实验证明了该方法的有效性 .
An aliasing component counteracting scheme for uniform maximally decimated filter banks by setting proper relations between analysis filters and synthesis filtes is proposed. Theoretical analysis shows that the aliasing at interface frequencies can be canceled completely. If the frequency characters of adjacent filters is symmetrical nearly, the total aliasing may be small. Experimental results show the effectivity.
出处
《北京邮电大学学报》
EI
CAS
CSCD
北大核心
2002年第3期22-26,共5页
Journal of Beijing University of Posts and Telecommunications
基金
国家"8 6 3计划"资助项目 (86 3- 317- 0 4 - 11- 99)
