third octave analysis of a blast signal

[npai]

Hi,

I am trying to analyze one blast signal in third octave band. I am taking a narrow band power spectra of the signal and it is giving me the correct values, but when I am trying to do third octave band power spectra it is not giving me the correct results. I tried using the SVT octave analysis from sound and vibrations toolkit but still it is not giving me right results.

The sampling frequency is 24000Hz.

I am attaching the Vi and the file which I am trying to analyze. I am trying to solve this problem from 4-5 hours and still not able to solve this. Any kind of help will be highly appreciated.

Thanks,

Nitin

[npai]

Hi again,

I figured that problem out. but still I am not getting the values from 10 Hz, even when I am setting the low band frequency to 10 Hz. It is giving me the value from 20 Hz. I am attaching the new VI and the file.

Thanks,

Nitin