Design of Variable Fractional Delay Filter Using DFT Interpolation

@article{Upadhyay2009DesignOV,
  title={Design of Variable Fractional Delay Filter Using DFT Interpolation},
  author={Dharmendra Kumar Upadhyay and Vishal Chaudhary},
  journal={2009 International Conference on Advances in Recent Technologies in Communication and Computing},
  year={2009},
  pages={691-693}
}
In this paper, design of variable fractional delay filter is investigated. DFT Interpolation method is utilized, with suitable index mapping to design a VFD FIR filter. Design examples are demonstrated to evaluate the effectiveness of the designed filter with the help of magnitude, group delay & relative error. Results of designed VFD FIR Filter are within acceptable limits over a wide range of frequency. Finally, the realization of VFD FIR filter is proposed. 

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