fast convolution in Matlab

Does anyone know where I might obtain a Matlab function to perform a fast
convolution in Matlab.  I have my own but its written in Matlab.  I'd like
one that was done in C(++), fortran, ect.  Speed is an issue.
S.M.

"Stephen McGovern" <smcgover@stevens.edu> wrote in message
news:00UCb.542$7%6.335839@newshog.newsread.com...
> Does anyone know where I might obtain a Matlab function to perform a fast
> convolution in Matlab.  I have my own but its written in Matlab.  I'd like
> one that was done in C(++), fortran, ect.  Speed is an issue.
> S.M.

Stephen,

So, it appears you meant to say:
> Does anyone know where I might obtain a C(++) or Fortran function to
perform a fast
> convolution as in Matlab?

I don't have a specific one in mind.  There is the approach according to
Google that seems to yield quite a lot of good information which, when
surveyed, should provide code as well.  I seem to recall finding it this way
in the past.  FFTW comes to mind.

It's pretty easy to write....  In fact, getting the FFT code you want to use
may be more the challenge.

Fred

"Stephen McGovern" <smcgover@stevens.edu> wrote in message
news:00UCb.542$7%6.335839@newshog.newsread.com...
> Does anyone know where I might obtain a Matlab function to perform a fast
> convolution in Matlab.  I have my own but its written in Matlab.  I'd like
> one that was done in C(++), fortran, ect.  Speed is an issue.

I don't whether you want c/c++ code, or c/c++ code but being useful in
matlab.
Furthermore, I don't understand why you think Matab is still slower than
others
, e.g. c(++), Fortran, etc. After updated to Matlab 6.5, it has gotten
accelleator
to increase speed upto c-wriiten application, especially it seems
upto its debug-mode speed.

Sorry if my understanding is incorrect.
-- 
BR,
------
James K. (txdiversity@hotmail.com)
- Any remarks, proposal and/or indicator would be greatly respected.
- Private opinions: These are not the opinions from my affiliation.
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