A FIR Digital Filter for Pulse Signal Processing

The purpose of digital filtering the signal is to eliminate the glitches and distortions that appear in some abnormal situations. This requires a good accuracy and stability of the filter because the FIR filter mainly uses a non-recursive structure. Therefore, in theory and practical finite precision calculations, the error is relatively small, and the design is also more flexible. The FIR filter does not contain feedback and is faster at the same order, and it can achieve real-time processing of blood cell count signals to ensure the detection speed of the system. And the FIR filter is a linear phase causal system that can satisfy the phase requirement of the signal in further processing. And the FIR filter is a linear phase causal system that can satisfy the phase requirement of the signal in further processing.