摘要
采用同时考虑幅度和延时特性的IIR型通用参数滤波器作为构件组成滤波器组,以单个滤波器特性相互叠加为基础,设计时使相邻滤波器在交界频率点满足一定条件,并对各过渡带区的组合特性施以优化和采取抗混叠、串话措施,便可做到以一定精度逼近于信号完全重构的滤波器组,是新的设计理论和方法。
Based on overlapping individual filter character, ⅡR general parameter filters are used as units of filterbank, whose amplitude and delay characters are all considered. In designing, let filter frequency character in passband region meet the demand, then optimizing the integrated frequency character in transition region with some anti-aliasing or anti-crosstalk measures used, the resulting filter bank can be nearly perfect reconstruction in certain precision. This is a new theory and method of design for filter banks.
出处
《电子与信息学报》
EI
CSCD
北大核心
2003年第3期326-332,共7页
Journal of Electronics & Information Technology
基金
国家"863"计划基金(863-317-04-11-99)