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Closed Form Variable Fractional Time Delay Using FFT

delete2012-05-01
delete14
PRE
AI
S
Soo‐Chang Pei *
Y
Yun-Chiu Lai
DOI:10.1109/LSP.2012.2191280delete
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摘要

摘要

En 中文
In this letter, a novel tunable frequency response is proposed for variable fractional delay filter with careful consideration on conjugate symmetry. This proposed fractional delay method can be efficiently realized by FFT using the tunable fractional delay parameter. Its equivalent closed form to windowing method is derived and presented. Several comparisons to other windowing methods are also demonstrated, such as the magnitude response, group delay, and approximation error between ideal frequency response.
Keyword:
Fractional delay (FD) filter
windowing method
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期刊

IEEE Signal Processing Magazine 封面图
IEEE Signal Processing Magazine
IF:
9.6
论文数:
1.1W
被引数:
1.7W

机构

N
National Taiwan University
学者数:
4.7W
论文数: 4.2W
被引数: 3.6W
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