Title :
Allpass variable fractional delay filters by pole loci interpolation
Author :
Hachabiboglu, H.
Author_Institution :
Div. of Eng., King´s Coll. London, London, UK
Abstract :
A simple, accurate and efficient variable fractional delay (VFD) IIR filter is presented. The method is based on the interpolation of pole loci of maximally-flat allpass fractional-delay filters. The responses of the proposed VFD filter for different fractional delay values are simulated and the approximation errors are shown to be very small.
Keywords :
all-pass filters; delay filters; interpolation; allpass variable fractional delay filters; approximation errors; pole loci interpolation; variable fractional delay IIR filter;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2010.3168
