Least squared error FIR filters with flat amplitude or group delay constraints

被引：5
|
作者：
Gopinath, RA [1 ]
机构：
[1] IBM Corp, TJ Watson Res Ctr, Yorktown Hts, NY 10598 USA
来源：
IEEE SIGNAL PROCESSING LETTERS | 2003年 / 10卷 / 09期
关键词：
delay filters; digital filters;
D O I：
10.1109/LSP.2003.815611
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Finite impulse response lowpass filters with prescribed number of zeros at omega = pi and either prescribed group delay flatness or prescribed amplitude flatness and linear phase are designed by minimizing a squared error. A simple orthogonal projection of least squared error filters (that are often available in closed form) onto a linear subspace determined via Thiran filters (for group delay flatness) and via Herrmann filters (for amplitude flatness) gives the desired filters.
引用
收藏
页码：270 / 272
页数：3
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