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Design of digital filters by computer
Author(s) -
Edwards R.,
Bradley A.
Publication year - 1970
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.1620020303
Subject(s) - computer science , biosignal , realization (probability) , digital filter , filter (signal processing) , maxima and minima , filter design , design methods , signal processing , computer aided design , computer engineering , electronic engineering , engineering drawing , digital signal processing , computer hardware , engineering , mathematics , mechanical engineering , computer vision , mathematical analysis , statistics , operating system
Digital filters are finding wide applications in signal processing aspects of such fields as engineering, geophysics and biosignal analysis. The design of a digital filter and its realization with near minima computer word length are two problems which can be solved by computer‐aided design techniques In this paper, the automated design of the initial filter (recursive type) only is considered. Both of the basic design methods—the direct and indirect approaches—have been analysed, and compute programs have been written to implement the various design techniques. The present program are limited to the design of flat loss type filters specified by their gain rather than their phase character istics. although provision has been made to allow for other types of design in the indirect approach Design examples are given, and the results analysed with a view to the suitability and limitations of the different design techniques.