Digital filters are similar to analogue filters in that they can remove unwanted noise from the original signal. Digital filters are mainly divided into two types based on the impulse response of the filter. They are Finite Impulse Response (FIR) and Infinite Impulse Response (IIR) filters. This paper seeks to acquire a thorough understanding of the simulation between IIR and FIR filters. FIR filters are so named because the response is fixed to zero at specified intervals, unlike the IIR filter, which operates with indefinite periods. As filters can be used in different applications, they can be used to condition a time domain signal through attenuating undesirable frequency content.