DocumentCode :
1164551
Title :
Filter Design Using Transformed Variables
Author :
Orchard, H.J. ; Temes, Gabor C.
Volume :
15
Issue :
4
fYear :
1968
fDate :
12/1/1968 12:00:00 AM
Firstpage :
385
Lastpage :
408
Abstract :
A concise description is given of some recently developed filter design techniques. The discussion includes equal-ripple and maximally flat passband filters with general stopbands, as well as equal-ripple stopband filters with general passbands. To solve the approximation problem and to improve numerical conditioning, the design is carried out exclusively in terms of one or two transformed frequency variables. A step-by-step description is given for the design of each filter type; the steps are so formulated that the erosion of significant digits is minimized. The design processes given are unique and are directly suitable for automatic computer programs. Experience with such programs, using the algorithms described in the paper, indicates that filters up to about degree 30 may be designed using only single precision in the calculations. A discussion of some practical predistortion techniques, as well as a listing of available tabulated filter design information, is also included.
Keywords :
Computer-aided design; Filter design; Numerical conditioning; Realizations; Roundoff errors; Algorithm design and analysis; Arithmetic; Frequency; Gabor filters; Information filtering; Information filters; Low pass filters; Passband; Predistortion; Process design;
fLanguage :
English
Journal_Title :
Circuit Theory, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9324
Type :
jour
DOI :
10.1109/TCT.1968.1082870
Filename :
1082870
Link To Document :
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