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O. Haas
Posts:
5
Registered:
12/7/04


problem with convolution
Posted:
Aug 16, 1996 4:09 PM


Hi, I have a problem that I have tried to solve with convolution but with little success: I have an input that is composed of several segments which makes a sort of sharp sinusoidal curve is smaller than the output. I know the output that is smoothed by some unknown function. In order to find this function I have evaluated a convolution function that would produce a set of known output. So far so good. Now I want to get the input from the output. I try to deconvolve and it's fine with the test cases, but I get unpredictable answer for other outputs, wery noisy in general. (I use fft, ifft, not conv, deconv) One of the problem I have occur when the size of my output vector is not the same than the size of the known output I used to find my convolution function.
Any comment on the way to solve this problem would be appreciated. Alternative methods to convolution welcome...
  Mr. O.C.L. HAAS DUT(Fra) BEng(UK) DETE(Fra) MSc(UK)    CTAT, N434, Coventry University,   Priory Street, COVENTRY CV1 5FB, UK   tel 01203 838 972   cey149@coventry.ac.uk  



