Non-recursive filtering and the effect of sampling frequency
P. RUTTER, E. M. BOZIC, P. W. WEBB · International Journal of Electronics · 1974
The purpose of this paper is to design a low-pass filter by the Standard Fourier series method and to investigate analytically the effect of varying the sampling frequency for a given number of taps and cut-off frequency. It is shown that to achieve the sharpest cut-off one requires a sampling frequency as close to the Xyquist frequency as is permissible by aliasing and the filtering of higher harmonics of the transfer function.