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Erschienen in:
1993 | OriginalPaper | Buchkapitel
Design of Digital Filters with Evolutionary Algorithms
verfasst von : Thomas Görne, Martin Schneider
Erschienen in: Artificial Neural Nets and Genetic Algorithms
Verlag: Springer Vienna
Enthalten in: Professional Book Archive
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A recursive digital Filter with infinite impulse response (IIR) is characterized by its recursive and non-recursive filter coefficients and the corresponding filter structure. In the well-known filter design algorithms the structure has generally to be chosen beforehand together with the maximum allowed filter length.Speed of computation can be an important aspect in determining the maximum permissible filter length and therewith the filter structure in an application. Specialized’ slim’ IIR filter (SIIR) structures are proposed as a generalized class of recursive filters including the classical forms. In SIIR structures a large number of coefficients is set to zero, thereby reducing the total number of non-zero coefficients and thus the computational cost.