good observation. i'm wondering why bars are not equally the same height across. the quantity alone should be enough (1 vs 5) to convey strength. with the height being variable, it seems to make things seem worst in the worst possible way -- 5 will still be 5, but when its a 1, because the height is so much shorter, it seems worst than 1. what is the upside to variable height when you already have variable width in terms of number of bars? it's not as if there's an algorithm that determines the correct height for that particular signal, as there is a (faulty?) algorithm to determine the correct width (bars).