A Fast Calculate for FIR Digital Filter
Lei Neng-fang · Modern Electronics Technique · 2006
FIR digital filter is essentially a kind of linear convolution operation.When the step N of digital filter is very large,the calculation is also troublesome and the system cannot achieve the real-time request.This essay introduces a kind of computerization of digital signal processing.It transforms linear convolution operation to addition operation.By using the addition operation,it can avoid the data piling up and speed up the operating speed,make processing of digital filter real-time and quick.