FFT in ROOT and Signal Analysis

From: Damir Buskulic (buskulic@lapp.in2p3.fr)
Date: Tue Dec 08 1998 - 09:50:11 MET


Hi everybody,

I'm working in VIRGO on a data analysis software based on ROOT. Since
we're doing mainly signal analysis, I developped a general algorithm
interface in C++ and implemented as an example an FFT algo (which is the
CERNLIB one).
There are defined also time series, spectral series, etc... but this is
for the moment very specific to VIRGO. One of the goals is to eventually
add this to ROOT.
The algorithm interface will be discussed in the coming months by a
group of the main gravitational waves detection experiments
(VIRGO-LIGO...) so my software is very tentative. If this is of some use
for any people, I'll give an adress where you can find all the
information. But even if everything is ready, I'll do that in a week or
two when VIRGO people will have given me some feedback. If somebody
needs it really really urgently...

For what concerns teaching, I also plan to use ROOT for teaching, and
this should be ready for February. So I'm very interested in
collaborating with other people in that field. Nick ?

Cheers

Damir

Nick van Eijndhoven wrote:
> 
> Florian Schopper wrote:
> >
> > Hey Rooters,
> >
> > just a very short question:
> > Is Fast-Fourier-Tranform or convolution implemented in root, or has anyone
> > a c++ library which can be easily linked?
> >
> >      thanks,
> >             Florian Schopper
> >
> 
> Hi Florian,
> Since I use ROOT also for my teaching I might soon need fast
> Fourier transforms in C++.
> Currently I am not aware of existing stuff, so I have in mind
> to make my own ones (based on Numerical recipes) just like
> I recently did for the Chi2 probab. function and the Gamma
> functions etc...
> I can't guarantee any timescale, but my intention is to work
> on it during the coming Xmass holidays.
> Of course if anyone has already something, I would be interested
> to know.
> --
> 
>                                               Cheers,
> 
>                                _/_/      _/    _/   _/_/_/_/    _/   _/
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>                            _/        _/    _/   _/_/_/_/    _/    _/
> 
> *----------------------------------------------------------------------*
>  Dr. Nick van Eijndhoven                Department of Subatomic Physics
>  email : nick@phys.uu.nl                Utrecht University / NIKHEF
>  tel. +31-30-2532331 (direct)           P.O. Box 80.000
>  tel. +31-30-2531492 (secr.)            NL-3508 TA Utrecht
>  fax. +31-30-2518689                    The Netherlands
>  WWW : http://www.phys.uu.nl/~nick      Office : Ornstein lab. 172
>  ----------------------------------------------------------------------
>  tel. +41-22-7679751 (direct)           CERN PPE Division / ALICE exp.
>  tel. +41-22-7675857 (secr.)            CH-1211 Geneva 23
>  fax. +41-22-7679480                    Switzerland
>  CERN beep : 13+7294                    Office : B 160 1-012
> *----------------------------------------------------------------------*

-- 
=====================================================================
| Damir Buskulic                  | Universite de Savoie/LAPP       |
|                                 | Chemin de Bellevue, B.P. 110    |
| Tel : +33 (0)450091600          | F-74941 Annecy-le-Vieux Cedex   |
| e-mail: buskulic@lapp.in2p3.fr  | FRANCE                          |
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