Introduction - If you have any usage issues, please Google them yourself
FIR (Finite Impulse Response) filters: finite impulse response filter units, known as non-recursive filters, digital signal processing system is the most basic element, it can be guaranteed any amplitude-frequency characteristics of both strict linear phase-frequency characteristics while the unit sample response is finite, so filter is a stable system. Therefore, FIR filter in communications, image processing, pattern recognition and other fields have a wide range of applications.