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Topic: problem with convolution
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O. Haas

Posts: 5
Registered: 12/7/04
problem with convolution
Posted: Aug 16, 1996 4:09 PM
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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...



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