Design of nearly linear phase IIR digital filters with prescribed log magnitude response

Masahiro Okuda, Masaaki Ikehara, Shin ichi Takahashi

    Research output: Contribution to conferencePaper

    1 Citation (Scopus)

    Abstract

    In this paper, we propose a new design algorithm for nearly linear phase IIR digital filters with prescribed log magnitude response. The error function used here is the sum of the weighted log magnitude-squared error and phase-squared error, and so it is possible to control log magnitude and phase response directly. The gradient vector of the proposed error function is easily calculated as the closed form solution because of its nature, in which the real and imaginary part of the logarithm of a complex transfer transfer function corresponds to the log magnitude and phase response, respectively. This algorithm is simple and converges quickly. Finally, we show the validity of the proposed algorithm with some examples.

    Original languageEnglish
    Pages631-634
    Number of pages4
    Publication statusPublished - 1996 Dec 1
    EventProceedings of the 1996 IEEE 39th Midwest Symposium on Circuits & Systems. Part 3 (of 3) - Ames, IA, USA
    Duration: 1996 Aug 181996 Aug 21

    Other

    OtherProceedings of the 1996 IEEE 39th Midwest Symposium on Circuits & Systems. Part 3 (of 3)
    CityAmes, IA, USA
    Period96/8/1896/8/21

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Electrical and Electronic Engineering

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