On Wed, 23 Aug 2006, Mathieu Bouchard wrote:
On Mon, 21 Aug 2006, matthew jones wrote:
This is all time domain stuff. As Jamie says, freq domain can be harder to interpret.
Cross-correlation in the time domain is the same as ordinary product by conjugate.
Arrr. I meant:
Cross-correlation in the time domain is the same as ordinary product by conjugate in the frequency domain.
PS: Similarly, cross-correlation in the frequency domain is the same as ordinary product by conjugate in the time domain. (due to the Fourier transform being almost its own inverse)
BTW some people (or a lot of people) may write conj(A)*B instead of A*conj(B). This doesn't yield the same result, but still, the two results are conjugates of each other.
_ _ __ ___ _____ ________ _____________ _____________________ ... | Mathieu Bouchard - tél:+1.514.383.3801 - http://artengine.ca/matju | Freelance Digital Arts Engineer, Montréal QC Canada