ON GROUP-DELAY SENSITIVITY PROPERTIES OF COMPLEX ALLPASS LATTICE FILTERS

被引：0
|
作者：
SAMADI, S
NISHIHARA, A
FUJII, N
机构：
来源：
IEICE TRANSACTIONS ON COMMUNICATIONS ELECTRONICS INFORMATION AND SYSTEMS | 1991年 / 74卷 / 11期
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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：
The group-delay sensitivity is studied theoretically for Gray and Markel allpass lattice filter realizing complex transfer function. Recursive expressions which were derived for phase and group-delay in real lattice are rederived for the complex case. These expressions are used to obtain upper bounds on group-delay sensitivity. The minimum number of frequencies where group-delay sensitivity becomes zero is discussed. Results corresponding real allpass lattice are also shown. Phase sensitivity properties of these filters are analyzed and compared with existing results. A new bound on phase sensitivity is also obtained.
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页码：3541 / 3545
页数：5
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