\section{CPU Requirements}

We tested the speed of the extractors by running them on a Intel\ Pentium\ 4 CPU, 
2.4\,GHz machine at Barcelona and measured 
the number of events executed per seconds. The results differed by about 20\% from one try to another (on the 
same extractor), but in general, the differences between the extractors are much bigger than the intrinsic fluctuation. 
Table~\ref{tab:cpu} shows the obtained results.

\begin{table}[htp]
\centering
\small{
\begin{tabular}{|c|c|c|c|}
\hline
\hline
\multicolumn{4}{|c|}{\large Tested CPU Time} \rule{0mm}{6mm} \rule[-2mm]{0mm}{6mm} \hspace{-3mm}\\
\hline
\hline
Nr. & Name         &  Events/sec. & comments\\
    &              &  (CPU)       & \\
\hline                                                     
\hline                                                     
1   & Fixed Win. (4,4)   & 3500--4500 & \\   
2   & Fixed Win. (4,6)   & 3500--4500 & \\   
3   & Fixed Win. (6.6)   & 3200--4000 & \\   
4   & Fixed Win. (8,8)   & 3200--4000 & \\   
5   & Fixed W. (14,10)   & 2700--3300 & \\   
\hline                          
6   & Fix. Win. Spline (4,4) & 1700--2200 &  \\   
7   & Fix. Win. Spline (4,6) & 1700--2200 &  \\   
8   & Fix. Win. Spline (6.6) & 1700--2100 &  \\   
9   & Fix. Win. Spline (8,8) & 1300--1800 &  \\   
10  & Fix. Win. Spl. (14,10) &  600--1200 &  \\   
\hline                          
11  & Fix. Win. Peak S. (2,2) & 2300--2900 &    \\   
12  & Fix. Win. Peak S. (4,4) & 2300--2900 &    \\   
13  & Fix. Win. Peak S. (4.6) & 2300--2900 &    \\   
14  & Fix. Win. Peak S. (6,6) & 2300--2900 &    \\   
15  & Fix. Win. Peak S. (8,8) & 2200--2800 &    \\   
16  & Fix. Win. Pk S. (14,10) & 2000--2500 &    \\   
\hline                          
17  & Slid. Win. (2,2) & 400--700 & \\   
18  & Slid. Win. (4,4) & 500--800 & \\   
19  & Slid. Win. (4.6) & 500--800 & \\   
20  & Slid. Win. (6,6) & 1000--1300 & \\   
21  & Slid. Win. (8,8) & 1100--1400 & \\   
22  & Slid. W. (14,10) & 1000--1800 & \\   
\hline                          
23  & Spline Amplitude  & 700--1000 & \\
24  & Splne Int. (1,1.5)& 300--500 & \\
25  & Spline Int. (2,3) & 200--400 & \\
26  & Spline Int. (4,6) & 150--200 & \\
27  & Spline Int. (6,9) & 80--120 & \\
\hline                               
28  & Dig. Filt. (6,6)  & 700--900 &   \\
29  & Dig. Filt. (4,4)  & 700--900 &   \\
34  & Dig. Filt. Pk S.  & 500--600 &   \\
\hline
\hline
\end{tabular}
}
\caption{The speed of every extractor.}
\label{tab:cpu}
\end{table}