DocumentCode :
3032594
Title :
Digital filters with prescribed zeros
Author :
Neuvo, Yrjö ; Saramäki, Tapio ; Gabel, Robert
Author_Institution :
Tampere University of Technology, Tampere, Finland
Volume :
3
fYear :
1978
fDate :
28581
Firstpage :
487
Lastpage :
490
Abstract :
We discuss the design of digital filters with maximally flat or equiripple passband behavior and transfer functions of the form H(z)= K frac{(z+1)^{q}\\Pi \\min{i=1}\\max {r}(z-e^{j\\omega _{i}})(z-e^{-j\\omega _{i}})}{D_{n}(z)} , where q+2r, the number of finite-plane zeros, is allowed to vary from 0 to n, the filter order. Analytic expressions are given for the magnitude squared function. Identification of the stopband edge frequency is treated in detail. The hard-ware requirements of these filters are compared with those of Chebychev and elliptic designs.
Keywords :
Attenuation; Digital filters; Elliptic design; Frequency; Passband; Poles and zeros; Shape; Transfer functions;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Acoustics, Speech, and Signal Processing, IEEE International Conference on ICASSP '78.
Type :
conf
DOI :
10.1109/ICASSP.1978.1170503
Filename :
1170503
Link To Document :
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