how can i do data statistics from thr frequency response graph on wvtool??

Hello. Let's say I have d1ch1 as a vector of 1x1024,

i write on the command window

>> wvtool(d1ch1)

Now I have the two graphs, one in the time doman and one in the frequency domain.

How can I do data statistics, like average, mean, std devation, and stuff like that on the two graphs?

Thank you very much for answers.

[Image Analyst]

Not sure about that tool. You might have to do it in a script instead of that tool/applet.

[RICCARDO JUERGEN BELLIMBUSTO]

thanks for reply!

ok i will make a code for this calculations.

can you say me how the tool get the frequency response?

thanks

[per isakson]

Doc says: "[...] By default, the frequency domain plot is the magnitude squared of the Fourier transform of the window vector in decibels (dB)."

[RICCARDO JUERGEN BELLIMBUSTO]

so let's say "resize12" is a vector of 2048 samples,

wvtool(resize12)

if i type this code

Y=fft(resize12);
x = sqrt(Y);
plot(x)

but instead of getting the same plot of wvtool(resize12) i get this graphs

what i am doing wrong?please help me

[per isakson]

Sorry, I cannot help you, but start by running the FFTOfNoisySignalExample, which is the first example of the documentation on fft()

Answer 1

[Nidhi Mittal]

Hi Riccardo,

I am not sure about the MATLAB version that you are using for calculating data statistics.

You can use Tools->Data Statistics to calculate data statistics like average, mean, etc.

Thanks,

Nidhi Mittal