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    Design of allpass variable fractional delay filter with signed powers-of-two coefficients

    Access Status
    Fulltext not available
    Authors
    Yu, C.
    Teo, Kok Lay
    Dam, Hai Huyen (Heidi)
    Date
    2014
    Type
    Journal Article
    
    Metadata
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    Citation
    Yu, Changjun and Teo, Kok Lay and Dam, Hai Huyen. 2014. Design of allpass variable fractional delay filter with signed powers-of-two coefficients. Signal Processing. 95: pp. 32-42.
    Source Title
    Signal Processing
    DOI
    10.1016/j.sigpro.2013.08.005
    ISSN
    0165-1684
    URI
    http://hdl.handle.net/20.500.11937/43959
    Collection
    • Curtin Research Publications
    Abstract

    This paper investigates the optimal design of allpass variable fractional delay (VFD) filters with coefficients expressed as sums of signed powers-of-two terms, where the weighted integral squared error is the cost function to be minimized. The design can be classified as an integer programming problem. To solve this problem, a new procedure is proposed to generate a reduced discrete search region to decrease the computational complexity. A new exact penalty function method is developed to solve the optimal design problem for allpass VFD filter with signed powers-of-two coefficients. Design examples show that the proposed method can achieve a higher accuracy when compared with the quantization method.

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