... series,providing insight into the underlying principles. The first main applicationwas to find the FIR filter weights that would provide interpolation for anyband-limited signal. In principle, ... processingneed not be in real time, of course, with the input and output pulses arriving and departing at the actual intervals specified. The input data could be storedafter sampling in real ... describing the channel frequency response to becompensated, can be defined over the whole frequency domain, we are onlyinterested in its form in the frequency interval containing significant signal energy....