Timeline for Requesting some help to solve this problem on impulse response of low pass filters

6 events

when toggle format	what		by	license	comment
Nov 7 at 18:24	comment	added	Curiosity		Thanks everyone. It makes sense now.
Nov 3 at 18:48	history	edited	Peter K.♦	CC BY-SA 4.0	Mathjaxing equations.
Nov 2 at 11:58	comment	added	Hilmar		This one seems trivial to disprove: the impulse response of an ideal lowpass filter is a `sinc()` function $\sin(x)/x$ which has plenty of negative coefficients.
Nov 2 at 9:58	comment	added	Matt L.		You just need a counterexample to disprove the claim: Here it is!
Nov 2 at 7:49	comment	added	Dan Boschen		Are you just asking if you were at a location given by m=0, n=0, where m represents left / right and n represents forward and backward, to prove that you can move to the left just as much as you can move to the right, or backward just as much as you can move forward? We can't do this with time in our causal world, but we can certainly do this in space. Still a non-causal low pass filter in time is still a low pass filter. Just take the Fourier Transform of its impulse response o get the frequency response and you prove that. Do the same thing with space if you need to.
Nov 2 at 6:08	history	asked	Curiosity	CC BY-SA 4.0