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Interpolated allpass fractional-delay filters using root displacement

Hacihabiboglu, H, Gunel, B and Kondoz, AM (2006) Interpolated allpass fractional-delay filters using root displacement 3315 - 3318.


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Fractional-delay filter is the general name given to filters modelling non-integer delays. Such filters have a flat phase delay for a wide frequency band, with the value of the phase delay approximating the fractional delay. A maximally-flat delay IIR fractional-delay filter can be obtained by the Thiran approximation. A simple and efficient method for obtaining filters modelling intermediate fractional delays from two Thiran fractional-delay filters is proposed. The proposed method allows continuously modifying the fractional delay. Computational complexity of the proposed method is discussed. A practical application of the method in model-based sound synthesis is given as an example.

Item Type: Article
Uncontrolled Keywords: DIGITAL FILTERS
Divisions: Faculty of Engineering and Physical Sciences > Electronic Engineering > Centre for Communication Systems Research
Depositing User: Mr Adam Field
Date Deposited: 27 May 2010 14:45
Last Modified: 09 Jun 2014 13:26

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