Does anyone have any idea how people draw those filter displays you see in some plugins? You know, like something in the picture below. I've been wondering this for the longest time, but I can't find any kind of explanation on it. Is the filters actual frequency response used to draw it, or how is it being drawn? If anyone knows, I'd be really grateful if you'd share. I love those displays and would love to make one myself. Even a simple one like Ableton's.