Digital filter basics

Let us know about digital filter first let us learn about filtering. Filtering is the spacial part of the digital signal processing system. It can also remove unwanted part of the signal such as random noise. This article gives information about the advantages and disadvantages of the digital filter to know more about it.

Digital filter uses a digital filter processor, it is a specific characteristic that you need to pay special attention to. In general digital filter can be considered two types are known as IIR full form and FIR filter full formIn the both of recursive and non-recursive (FIR and IIR filter) in DSP, the algorithm can be implemented is based on DFT or differential equation.

In general analog input signal must satisfy certain requirements, That will be converting an output digital signal into analog signal form.


A system that performs the mathematical operation in signal processing on a sampled signal to reduce or enhance certain aspects of that signal is known as a digital filter. It is removed the unwanted parts of the signal.