# Understanding IIR , Low Pass, High Pass, Chebyshev, Elliptic Filter? [closed]

I see these terms everyday in every lecture, I do read stuff from wikipedia, follow lecture notes, study solved exercises. All in all I do have a rough idea about these, I know a little from everything, but the picture is not complete, far from complete, I would like to understand all of them and improve myself because in 2 weeks I will have an exam, is there a website which you can suggest, describing these very well? Animations would be great, I'm clueless from where shall I start and how do I close all these gaps :(

• Design few filters in MATLAB, do some filtering and try to understand their characteristics. fvtool is great, especially if you want to visualize anything you need.