Allpass variable fractional delay filters by pole loci interpolation


ELECTRONICS LETTERS, vol.46, no.8, pp.558-559, 2010 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 46 Issue: 8
  • Publication Date: 2010
  • Doi Number: 10.1049/el.2010.3168
  • Title of Journal : ELECTRONICS LETTERS
  • Page Numbers: pp.558-559


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.