Tue Mar 19 17:37:00 EDT 2013
What does an LP/HP/BP response look like?
Is there any kind of visual quality that can distinguish impulse
responses of LP/HP/BP? They are all sums of damped exponentials, so
where is the difference?
Qualitatively, one of the key points seems to be how phase and damping
- The DC response is determined by the average, so when most of the
response is above zero, the response will be low-pass.
- If the response doesn't jump from 0 immediately, this shows
inertia, a property of low-pass behavior.
Probably step responses are a lot easier to interpret since they are a
bit more intuitive to grasp.