# Out of memory problem with filter design tool in Matlab [closed]

I have a set of data in excel like this: column A is time in ns and column B is the electric field strength. now I want to convert the time-domain signal from these data to a frequency-domain signal with DSP toolbox in matlab.

to calculate Fs (sampling frequency) in order to use in signal analyse i use this formula:

time = T(:,1);
L=2033;
Ts = mean(diff(time));
Fs = 1/Ts;


Fs= 5e+09


then I import the signal (E) with sampling frequency Fs in signal analyze toolbox. my signal is like this: now i want to apply a bandpass filter in 16-32 MHZ range , so : I've increased the paging file to maximum on my system with no success! I should say that my system configuration is like this:

i5 CPU at 2.5 GHz

8 GB R3 Ram at 1600 MHz

I have two specific questions:

1- what should I do? Is there any thing that I should do to to be able to design the filter on my system?

2- if I change the time to second and the frequency to hz , how much does the results change?

## closed as off-topic by jonsca, sansuiso, nispio, Peter K.♦Nov 17 '13 at 18:57

• This question does not appear to be about signal processing within the scope defined in the help center.
If this question can be reworded to fit the rules in the help center, please edit the question.

• This question appears to be off-topic because it is about configuring the software – jonsca Oct 27 '13 at 4:51

• @MohammadSobbouhi: I'm not entirely sure what you are asking. There are a handful of ways that you can use the filter that you just designed. One way is to export the filter coefficients to the workspace. If you saved the coefficients in a variable named coef, you could apply it to a signal x with y = filter(coef,1,x). If you need additional help, I suggest you post a new question. – nispio Oct 25 '13 at 22:53