Modified technique of FIR filter design by the frequency sampling method
Roman Y. Belorutsky, Ivan S. Savinykh · 2016
Problem of calculating transition band sample value (transition coefficient) of low pass frequency sampling filters is considered. The analytical expressions for calculating transition coefficient based on minimum of the sum of squared frequency response values in selected points in the stopband are obtained. In this case, the value of maximum difference between resultant frequency response and desired one in the stopband is close to minimum.