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This paper presents a noniterative weighted-leastsquares (WLS) method for designing allpass variable fractional-delay (VFD) digital filters. After expressing each coefficient of an allpass VFD filter as a polynomial of the VFD parameter , we develop a noniterative technique for finding the optimal polynomial coefficients, and show that the allpass VFD filter design problem can be efficiently solved without using any iterative procedure while a closed-form solution can be easily obtained throughdoi:10.1109/tcsi.2005.854406 fatcat:ly35p3lcjbegdfuqptuhztva2y