Hey guys, I am learning about the filter shapes deduced from the poles and zero plots, however alot of sources are describing it differently with no logical explanation. I want to know what exactly the poles and zeros do between the range Ω = 0 and Ω = π. One source i read explains if the pole is close to Ω = 0 the magnitude will be large hence a low pass behaviour...to be honest i wasn't quite sure how that came to that conclusion. If you guys can simply explain how the filter shapes are brought about for Low pass, high pass, bandstop and bandpass it will be much appreciated. Thanks!