Nov 14, 2012 #1 I izhak2 Newbie level 3 Joined Nov 14, 2012 Messages 3 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,298 Hey, Why is the flip of the impulse response needed during the convolution process? Thanks in advance!
Hey, Why is the flip of the impulse response needed during the convolution process? Thanks in advance!
Nov 14, 2012 #2 M Mityan Full Member level 5 Joined Jul 11, 2012 Messages 275 Helped 48 Reputation 96 Reaction score 45 Trophy points 1,308 Activity points 2,835 This is according to Duhamel's integral formula. Integral of f(tau)*h(t-tau)d(tau). -tau means flip.
Nov 14, 2012 #3 I izhak2 Newbie level 3 Joined Nov 14, 2012 Messages 3 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,298 Thanks. One more thing, in pattern matching using polynomial multiplication (with FFT) (T text, P pattern), as we flip P when multiplying (T*flipped P). is it related in any way to the flip we perform on the impulse response?
Thanks. One more thing, in pattern matching using polynomial multiplication (with FFT) (T text, P pattern), as we flip P when multiplying (T*flipped P). is it related in any way to the flip we perform on the impulse response?
Nov 15, 2012 #4 M Mityan Full Member level 5 Joined Jul 11, 2012 Messages 275 Helped 48 Reputation 96 Reaction score 45 Trophy points 1,308 Activity points 2,835 You can flip another component instead h(tau)*f(t-tau)d(tau).
Nov 15, 2012 #5 I izhak2 Newbie level 3 Joined Nov 14, 2012 Messages 3 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,298 Was that an answer to the question if the two are related? If so, how exactly?
Nov 15, 2012 #6 M Mityan Full Member level 5 Joined Jul 11, 2012 Messages 275 Helped 48 Reputation 96 Reaction score 45 Trophy points 1,308 Activity points 2,835 I'm afraid that I don't understand your question