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

页码：270 / 272

页数：3

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