bonjour,
je dois d=E9finir le spectre d'un signal, pour cela j'ai tent=E9
d'utiliser FFT Power Spectrum.vi et FFT spectrum (Mag-phase).vi.
Dans les 2 cas le r=E9sultat graphique que j'obtiens en sortie de ces vi
n'est pas correct, la fr=E9quence est en y et ne cesse d'augmenter, au
lieu d'=EAtre
When you say you fill your time data array dynamically, do you mean
the length of the array change?
The reason I am asking is that the behavior you describe is weird.
The only thing that can make your Y-values grow is if the energy in
each bin grows. This can happen if:
1 - You bin size gets
As expected from the behavior you described, you are growing your
array point-by-point by adding a new element at each iteration. Doing
this, you are changing the frequency resolution of your spectrum and
therefore can not directly compare the result from one iteration to
another.
You may
