There is another way to go at this: Take an actual recording and snip out a few seconds, then reload that short piece of data to see if the FFT will handle it. I tried to do that with the sample VW Golf data, but I could not see how to extract a few seconds of data (other than exporting it to a .csv...

I'm trying to help a technician at my local GM dealer. I know they have Pico equipment, but the tech could not pick up the vibration on his equipment. (I'm sure the equipment recorded the vibration, but I'm guessing it was not sustained long enough for the analysis, which I suppose is an FFT, to sho...

The vibration is probably a T1 at about 10 Hz.

It lasts 1-2 seconds with a pause of several seconds between events. The length of the vibration and pause varies some.

I would like the software to analyze the vibration frequency to determine if it is really at T1 frequency or not.

I read in an older post where the vibration needs to last at least 3 seconds. Is that still true?