Design method of FIR digital filters with arbitrary passband by using interpolation techniques
Koji Kitamura, Masaaki Ikehara, Shinichi Takahashi · European Conference on Circuit Theory and Design · 1989
Using this method it is possible to implement a narrowband filter with fewer than 30 percent multipliers of the direct form, and a wideband lowpass filter with fewer than 40 percent multipliers of usual one. It shows the effectiveness of our proposed design method.