Delay time and FFT

how can you shift a signal by a time delay? Is this what you need in matlab [lag,criterion]=delay(x,y)??

[Susan]

also, what is FFT.. thats what I see when I search for it.. I don't get how to shift the signal I have?

[bym]

umm...you might want to edit your comment :P

[Susan]

yeah your right, I might get better response if add my findings :)

Answer 1

[Rick Rosson]

Please see the following answer:

Time Delay for Time Domain Function

HTH.

Rick

Answer 2

[Rick Rosson]

As for the FFT, please try:

   >> doc fft

HTH.

Best