Video Tutorial on Convolution

Video is still being worked on, thanks for your patience.

In the meantime, I found this gif online and it helps me visualize the graphical approach to convolution.

Here you can see that the value of the convolution at a point, t, is the area shared by the two graphs when one is centered at the origin and the other at t. One subtlety that is lost here is that one the signal being moved is flipped. Since it is symmetric it looks the same.  If you look at the equation for convolution 
--Ssanthak 23:03, 5 May 2011 (UTC)