基于DFT插值的可变分数阶延迟滤波器设计

2009 International Conference on Advances in Recent Technologies in Communication and Computing Pub Date : 2009-10-27 DOI:10.1109/ARTCom.2009.41

D. Upadhyay, Vishal Chaudhary

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引用次数: 0

摘要

本文研究了可变分数阶延迟滤波器的设计。采用DFT插值法，配以合适的索引映射，设计了VFD FIR滤波器。通过设计实例，利用幅值、群延迟和相对误差来评价所设计滤波器的有效性。设计的VFD FIR滤波器的结果在很宽的频率范围内都在可接受的范围内。最后，提出了VFD FIR滤波器的实现方法。

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Design of Variable Fractional Delay Filter Using DFT Interpolation

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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2009 International Conference on Advances in Recent Technologies in Communication and Computing

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