A new variable fractional sample delay filter with nonlinear interpolation
G.-S. Liu, C.-H. Wei · IEEE Transactions on Circuits and Systems II Analog and Digital Signal Processing · 1992
A finite impulse response (FIR) filter that can synthesize any fractional sample delay by a nonlinear interpolation technique is presented. Analytically closed-form solutions for the tap weights of such an FIR filter and their frequency responses are also presented.>